(a) Books and catalogs mailed at bulk rates provided by § 134.1 (b) (1). Only the following specifically named items may be enclosed loose provided they relate exclusively to the book or catalog they accompany:

(1) Single reply envelope or reply post card, or both.

(2) Single order form.

(3) Printed circular. Circulars fastened securely along the entire bound edge by means of paste, stitches, or staples are not loose enclosures.

(4) If no circular is enclosed, a printed price list listing only articles featured in the catalog and showing only the same prices and discounts as the catalog.

(5) An invoice. (See § 135.5(b) (2) of this chapter.)

(6) Samples of merchandise attached to pages.

(b) All other third-class matter. The following are permissible enclosures:

(1) An invoice (see § 135.5(b) (2) of this chapter).

(2) Manuscripts accompanying related proof sheets (see § 135.5(b) (1) (vi) (b) of this chapter).

age is considered consent by the mailer to postal inspection of the contents.

(b) Marking. All sealed pieces mailed at the single piece third-class postage rate provided for by § 134.1 (a) must be legibly marked, preferably below the postage and above the name of the addressee, with the two words "Third Class." The marking may be included as a part of a permit imprint, and it may be printed adjacent to the meter stamp by a postage meter, but it may not be printed by a meter slogan or ad plate. The marking will not be considered adequate if it is included as a part of a decorative design or advertisement. Only the markings required by § 134.4(b) (3) need be carried on sealed pieces mailed at the bulk third-class postage rates provided for by § 134.1(b).

AUTHORITY: The provisions of this Part 135 issued under 5 U.S.C. 301, 39 U.S.C. 501, 505. SOURCE: The provisions of this Part 135 appear at 35 F.R. 19435, Dec. 23, 1970, unless otherwise noted.

§ 135.1

Rates.

(a) Fourth-class (parcel post) zone rates (effective Nov. 14, 1970).

Zones

(1) Parcels weighing less than 10 pounds, and measuring over 84 inches but not exceeding 100 inches in length and girth combined, are chargeable with a minimum rate equal to that for a 10 pound parcel for the zone to which addressed. See § 135.3 for size and weight restrictions.

(2) For catalogs weighing up to 10 pounds, see paragraph (b) of this section.

(3) For books and library books, see paragraph (c) and (d) of this section. (4) For 16-millimeter films, 16millimeter film catalogs and related materials, see paragraphs (c) and (d) of this section.

(5) Gold mailed within Alaska or from Alaska to other States and U.S. possessions: 2 cents each ounce or fraction, regardless of distance.

(b) Catalogs and similar printed advertising matter in bound form having

24 or more pages, at least 22 of which are printed, weighing 16 ounces or more but not exceeding 10 pounds-effective Nov. 14, 1970-(1) Rates for bulk mailings of separately addressed identical pieces in quantities of not less than 300 mailed at one time.

(i) Postage. Postage must be paid by permit imprints. Each imprint must show name of the post office, permit number, and the words "U.S. Postage Paid," unless the mailer is authorized to use a company permit imprint as provided in § 145.3 (c). The words "Bulk Catalog Rate" shall be printed within the permit imprint. The position of the imprint may be varied to that automatic data processing equipment may be utilized to simultaneously print the address, imprint and any other information.

(ii) Mailing statement. The mailer must submit with each mailing statement on Form 3605 showing:

(a) Weight of a single piece.

a

(b) Number of pieces addressed for delivery in each zone.

(c) Total number of pieces in the mailing.

(d) Number of pounds for delivery in each zone.

(e) Total per piece charge for each zone.

(f) Total pound rate postage for each zone.

(g) Sum of postage at the per piece rate and at the pound rate.

(h) Name and address of mailer and permit number.

(iii) Separation required. The mailer must separate mailing pieces by parcel post zones so that postage may be verified. Mail for each parcel post zone must be further separated and placed in sacks by cities or States of destination in each instance where there are 10 or more pieces for the same post office or State, or where five or more catalogs weigh 10 or more pounds. Use No. 3 mail sacks except when greater volume requires the use of No. 2 mail sacks. When there is insufficient volume for a direct sack or a State sack, combine the pieces in sacks for mixed States by parcel post zones. Label each sack to include parcel post zone separation and destination.

(iv) Separations recommended. In addition to the separations required in subdivision (iii) of this subparagraph, it is recommended that the mailer separate the pieces to the finest extent possible in the manner prescribed by § 134.4(c) of this chapter.

(v) Maximum weight in a sack. The total weight of pieces placed in one sack must not exceed 70 pounds.

(2) Optional handling of bulk mailings of catalogs weighing in excess of 2 pounds when addressed for delivery in local parcel post zone only. Address labels and unaddressed catalogs weighing in excess of 2 pounds, at the option of the mailer, may be mailed separately for local delivery at the office of mailing subject to all of the following conditions:

(i) The address labels, which may not measure less than 3 by 44 inches, must show the full name and ZIP Code address of the sender and addressed and must be sorted by the mailer to the fourth and fifth digit of the ZIP Code.

(ii) Postage must be paid by permit imprints for each label, including labels returned as undeliverable. The imprint may be placed on the catalog or on the label. See § 145.1(a) of this chapter. The imprints must be prepared in the manner prescribed in subparagraph (1)(i) of this paragraph.

(iii) The mailer must submit with each mailing a statement on Form 3605 showing:

(a) The weight of a single piece.

(b) Total number of pieces in the mailing.

(c) Total number of pounds in the mailing.

(d) Total per piece charge. (e) Total pound rate postage. (f) Sum of postage at the per piece rate and at the pound rate.

(g) Name and address of mailer and permit number.

(iv) The total weight of pieces placed in sacks, cartons, crates or any other types of containers must not exceed 70 pounds.

(v) The address labels must be sent to the postmaster at the mailing (delivery) office by the mailer.

(vi) Address labels bearing incorrect, nonexistent or any other undeliverable addresses will be corrected or endorsed to show why they are undeliverable and returned under cover to the mailer. Each envelope shall be rated with postage due at the rate of 10 cents for each address label contained in the envelope. At the request of the mailer, the postmaster will notify the mailer, at mailer's expense and by means specified by mailer, of the number of address labels being returned. The request for notification must accompany the labels. Correctly addressed

ricultural, labor, veterans, or fraternal
organization or association. No permit
is required.

(i) The following specific items when
loaned or exchanged between schools,
colleges, or universities, and public li-
braries, museums, and herbaria, non-
profit religious, educational, scientific,
philanthropic, agricultural, labor, veter-
ans, or fraternal organizations or associ-
ations; or when cooperatively processed
by libraries; or loaned or exchanged be-
tween libraries, organizations, or associa-
tions, and their members, readers, or bor-
rowers, may be mailed at the library
rate:

(a) Books, consisting wholly of read-
ing matter, scholarly bibliography, or
reading matter with incidental blank
spaces for notations and containing no
advertising other than incidental an-
nouncements of books.

(b) Printed music, whether in bound
form or in sheet form.

(c) Bound volumes of academic theses
in typewritten or duplicated form.

(d) Periodicals, whether bound or un-
bound.

(e) Sound recordings. (See also sub-
paragraph (5) (ii) (b).)

(ƒ) Other library materials in printed,
duplicated, or photographic form or in
the form of unpublished manuscripts.

(g) Museum materials, specimens, col-
lections, teaching aids, printed matter,
and interpretative materials intended to
inform and to further the educational
work and interests of museums and
herbaria.

(ii) The following specific items when
sent to or from schools, colleges, univer-
sities, public libraries, museums, and her-
baria and to or from nonprofit religious,
educational, scientific, philanthropic,
agricultural, labor, veterans, or fraternal
organizations or associations, may be
mailed at the library rate:

(a) 16-millimeter or narrower width
films; filmstrips; transparencies; slides;
microfilms; all of which must be positive
prints in final form for viewing.

(b) Sound recordings.

(c) Museum materials, specimens, col-
lections, teaching aids, printed matter,
and interpretative materials intended to
inform and to further the educational
work and interests of museums and
herbaria.

(d) Scientific or mathematical kits,
instruments, or other devices.

(e) Catalogs of the materials in para-
graphs (5) (ii) (a), (b), (c), and (d)
having 24 or more pages, at least 22 of
which are printed, and guides or scripts
prepared solely for use with such
materials.

(6) The address and each piece mailed
at the rates provided by § 135.1 (c) and
(d) must include the complete ZIP Code.
When 5,000 or more identical pieces are
mailed at these rates during a single day
and there are enough pieces for the same
destination to fill approximately one-
third of a sack, they must be presorted
and placed in sacks under the instruc-
tions contained in § 134.4 (c) of this chap-
ter as follows: Subparagraph (2); and
subdivisions (i)(b), (ii) (b), (iii) (b),
(iv) (b), and (v) (b) of subparagraph (6).
When 1,000 or more but less than 5,000
identical pieces are mailed at these rates
during a single day and there are enough
pieces for the same destination to fill ap-
proximately one-third of a sack, they
must be presorted and placed in sacks
under the instructions in § 134.4(c) of
this chapter as follows: Subparagraph
(2); and subdivisions (ii) (b), (iii)(b),
(iv) (d), and (v) (b) of subparagraph (6).

(b) Application of rates. (1) The rates
in § 135.1 (a) and (b) are applied on
the basis of weight of the individual piece
and the zone between the sectional center
facilities of the post offices of mailing
and delivery. Articles addressed to mili-
tary post offices overseas (Army, Air
Force, Fleet post offices, and Naval ves-
sels) require postage at the zone rate ap-
plicable between mailing office and post
office shown in the address.

(2) There is a local zone which is de-
fined by the Postmaster General from
time to time and eight numbered zones
which are determined as follows:

(i) The United States and its terri-
tories and possessions are divided into
units of area 30 minutes square, identical
-with a quarter of the area formed by the
intersecting parallels of latitude and
meridians of longitude. Each unit of area
is designated by a number.

(ii) The zones are based on a straight
line distance between the unit of area in
which the dispatching sectional center
of the mailing post office is located and
the unit of area in which the receiving
sectional center facility of the post office
of address is located, measured from the
center of one unit to the nearest point
in the other.

mailable live animals, and all other mat-
ter not included in first-, second-, or
third-class.

(2) Zone rates in § 135.1(a) are ap-
plicable to all fourth-class mail, except
that items described in § 135.1 (b), (c),
and (d) may be mailed at the special
rates shown in those sections, if desired.

(3) Catalogs and similar printed ad-
vertising matter in bound form, having
24 or more pages, at least 22 of which
are printed, weighing 16 ounces or more
but not exceeding 10 pounds, may be ac-
cepted at the zone rates in § 135.1 (b) (1)
and (2).

(4) Only the following specifically de-
scribed articles may be mailed at the spe-
cial fourth-class rate provided by § 135.1
(c).

(i) Books, including books issued to
supplement other books, of 24 pages or
more, at least 22 of which are printed,
consisting wholly of reading matter or
scholarly bibliography or reading matter
with incidental blank spaces for nota-
tions and containing no advertising mat-
ter other than incidental announcements
of books. Advertising includes paid ad-
vertising and publishers' own advertis-
ing. Advertising may be in display, classi-
fied, or editorial style. The identification
statement "Special Fourth-Class Rate-
Books" must be placed conspicuously on
the address side of each package.

(ii) 16-millimeter films or narrower
width films which must be positive prints
in final form for viewing, and catalogs of
such films of 24 pages or more, at least
22 of which are printed, except films and
film catalogs sent to or from commercial
theaters. The identification statement
"Special Fourth-Class Rate-16 mm. or
Narrower Films or 16 mm. or Narrower
Film Catalog" must be placed conspicu-
ously on the address side of each package.

(iii) Printed music whether in bound
form or in sheet form. The identification
statement "Special Fourth-Class Rate-
Printed Music" must be placed con-
spicuously on the address side of each
package.

(iv) Printed objective test materials
and accessories thereto used by or in
behalf of educational institutions for
testing ability, aptitude, achievement, in-
terests, and other mental and personal
qualities with or without answers, test
scores, or identifying information re-
corded thereon in writing or by mark.
The identification statement "Special

Fourth-Class Rate-Objective Test Ma-
terials" must be placed conspicuously on
the address side of each package.

(v) Sound recordings, including inci-
dental announcements of recordings and
guides or scripts prepared solely for use
with such recordings. Player piano rolls
are classified as sound recordings. Mis-
cellaneous advertisements, including
trademarks, of persons or concerns other
than the record manufacturer, are not
permissible on title labels, protective
sleeves, jackets, cartons, and wrappers,
and such advertisements may not be
mailed as enclosures. The identification
statement "Special Fourth-Class Rate-
Sound Recordings" must be placed con-
spicuously on the address side of each
package.

(vi) Playscripts and manuscripts for
books, periodicals, and music. The iden-
tification statement "Special Fourth-
Class Rate-Manuscript" must be
placed conspicuously on the address side
of each package.

(vii) Printed educational reference
charts, permanently processed for pres-
ervation. The identification statement
"Special Fourth-Class Rate-Education-
al Reference Charts" must be placed con-
spicuously on the address side of each
package.

(viii) Looseleaf pages, and binders
therefor, consisting of medical informa-
tion for distribution to doctors, hospitals,
medical schools, and medical students.
The identification statement "Special
Fourth-Class Rate-Medical Informa-
tion" must be placed conspicuously on
the address side of each package.

NOTE: When two or more articles described
in this section are mailed in the same pack-
age, the appropriate descriptive terms shall
be combined in the identification statement
placed on the address side. Example: "Special
Fourth-Class Rate-Books and Sound Re-
cordings."

(5) Only the articles specifically de-
scribed in this section may be mailed at
the fourth-class library rate provided
by $135.1(d). The identification state-
ment "Library Rate" must be placed con-
spicuously on the address side of each
package. Each package must show in the
address or return address the name of
a school, college, university, public li-
brary, or name of a nonprofit religious,
educational, scientific, philanthropic, ag-