saving-size type, or in the form of sound recordings, for use of blind persons, containing no advertising, when furnished by an institution, agency, publisher, organization, or association (including a library or school and including organizations or associations of or for blind persons), not conducted for private profit, to a blind person, at a price not greater than the cost price thereof.

(b) Free of postage. The following articles which meet the conditions stated may be mailed free:

(1) Books, pamphlets, and other reading matter, including pages thereof, published (whether prepared by hand, or printed) either in raised characters or in sightsaving-size type, or in the form of sound recordings, for use of blind persons containing no advertising or other matter whatsoever when sent unsealed

(i) By an institution, agency, publisher, organization, or association (including a library or school and including organizations or associations of or for blind persons), not conducted for private profit, as a loan to blind readers, or when returned by the blind reader to the lender; or

(ii) To a blind person without cost to the blind person; or

(iii) To an institution, agency, publisher, organization, or association (including a library or school and including organizations or associations of or for blind persons), not conducted for private profit, to be furnished to a blind person without cost to such blind person.

(2) Magazines, periodicals, and other regularly issued publications published (whether prepared by hand, or printed) either in raised characters or in sightsaving-size type, or in the form of sound recordings, for use of blind persons, when containing no advertising and for which no subscription fee is charged. § 28.4

Reproducers, sound recordings, other materials and appliances for the preparation of reading matter for blind persons.

(a) Reproducers, or parts thereof, for sound recordings for blind persons, braille writers, and other appliances for the preparation of reading matter for blind persons, or parts thereof, are mailable free of postage under the following conditions:

(1) Reproducers or parts thereof which are the property of United States Gov

ernment when sent for repair or returned after repair, or

(2) Reproducers, braille writers, other appliances and parts thereof that are the property of:

(i) A State government or any subdivision thereof;

(ii) A public library;

(iii) A private agency for the blind not conducted for private profit; or (iv) A blind person.

(3) They must be sent by:

(i) Organization, institution, public library, or association for blind persons, not conducted for private profit, to a blind person or to another such agency;

(ii) Blind person to an organization, institution, public library, or association for blind persons, not conducted for private profit.

(b) Paper, records, tapes, and other materials which are the property of a State government, or any subdivision thereof, a public library, a private agency for the blind not conducted for private profit, or a blind individual, and are intended for use by the recipient for the production (whether by hand or printed) of reading matter either in raised characters or sightsaving-size type, or in the form of sound recordings, for use by blind persons, may be mailed free of postage provided the shipment is accompanied with the certification required in § 28.5(d).

[28 F.R. 1472, Feb. 15, 1963, as amended at 28 F.R. 6537, June 26, 1963]

(a) Return address. Any matter mailed under provisions of this part shall show the name and address of the sender in the upper left corner of the address area of the piece.

(b) Publications and other reading matter. (1) Articles mailed free of postage under § 28.3(b) and § 28.4(b) shall show the word "Free" over the words "Matter for the Blind" in the upper right corner of the address area of the piece.

(2) Articles mailed at the special rate of 1 cent per pound or fraction thereof under § 28.3(a) shall show the words "Matter for the Blind" in the upper right corner of the address area adjacent to the postage.

(c) Reproducers and other appliances. The appliances or parts thereof mailed

free of postage under § 28.4(a) shall show the word "Free" over the words "Appliance for the Blind" in the upper right corner of the address area of the piece.

(d) Certificate. Any paper, records, tapes, or other materials intended for the production of reading matter for the blind which is mailed free of postage under § 28.4(b) shall in addition to the markings required in paragraph (b) (1) of this section have the following certification on the address side of the container and on any invoice or packing slip enclosed therein:

This certified that the contents of this parcel are the property of (name of the owner) to be used for production of reading matter for the blind, and are mailed free of postage under the provisions of 39 United States Code 4654.

§ 28.6 Weight and size limits.

(a) Publications and other reading matter mailed under § 28.3 (a) and (b): Weight, 15 pounds; size, same as provided in § 25.3 (b) of this chapter.

(b) Reproducers and other appliances mailed under § 28.4(a): Weight, 70 pounds; size, 100 inches length and girth combined.

(c) Paper, records, tapes and other materials mailed under § 28.4(b): Weight and size-same as provided in § 25.3 (a) and (b) of this chapter.

(a) Attachment. Letters or other pieces of first- or third-class mail may be placed in an envelope and securely tied or otherwise attached to the address side of a second-, third-, or fourthclass mailing piece including airmail articles. The envelope must be placed on the address side of the principal mailing piece. Combination envelopes or containers having separate parts for the two classes of mail may be used. See § 24.8 concerning the sealing of thirdclass mail.

(b) Addressing. The name and address of the sender and the name and address of the addressee should be placed on both the principal mailing piece and the attachment. If both names and addresses do not appear on both pieces, the sender's name and address must be placed on one and the name and address of the addressee must be placed on the other. Combination containers having inseparable portions or compartments are mailable with the names and addresses on only one portion.

(c) Postage. Postage on the second-, third-, or fourth-class mail must be prepaid at the appropriate rate and must be placed in the upper right corner of the address space. Postage at the appropriate first- or single-piece third-class rate must be paid for the attachment and affixed to it. If mailed by air, postage at the airmail rate must be paid for the letter.

(d) Markings required. First-class attachments may be marked "FirstClass" or "Letter Enclosed". Third-class attachments must be marked "ThirdClass".

§ 29.3 Mailing enclosures of different classes.

(a) Enclosures mailed with secondclass and controlled circulation publications (1) First- and third-class enclosures. Separate and independent letters or other first- or third-class mail may be mailed as enclosures with second-class and controlled circulation publications.

(2) Payment of postage. Postage at the appropriate first- or single piece third-class rate must be paid for each separate enclosure. Pieces of related

matter enclosed with a publication as a unit may be regarded as a single enclosure for purpose of computing postage. The postage may be placed on the enclosure by using precanceled or meter stamps, or the postage may be placed on the outside envelope, wrapper, or cover. Postage at the second-class pound or per copy rates or postage at the controlled circulation rates must be paid on the publication in the manner prescribed by part 16 of this chapter. When postage at the transient second-class rate is paid on the publication, follow the procedure in paragraph (b) of this section.

(3) Marking required. When postage for the enclosure is placed on the outside envelope, wrapper, or cover of a publication, the mailer must mark each piece as required by § 29.3(b) (5).

(b) Enclosures mailed with third- and fourth-class parcels—(1) First-class enclosures. Letters may be enclosed with books, catalogs, and merchandise mailed at third-class rates. (See § 29.2 for mailing letters with other third-class matter.) Letters may be enclosed in fourthclass parcels. Postage at the first-class rate must be paid for each letter.

(2) Third-class enclosures. Thirdclass mail may be enclosed in a fourthclass parcel mailed at the special rates in § 25.1 (b), (c), and (d) of this chapter, and § 28.1 of this chapter. Postage at the single-piece third-class rate must be paid for each enclosure except the items listed in § 25.6 of this chapter.

(3) Placement of enclosure. The enclosure should be placed on top of other items in the parcel when practical.

(4) Payment of postage. Postage for the enclosure must be placed on the outside of the parcel. It may be added to the postage for the parcel and the total amount paid together, or the postage for the enclosure may be affixed separately from the postage for the parcel.

(5) Marking required. The mailer must place the endorsement "First-Class Mail Enclosed" or "Third-Class Mail Enclosed" on each parcel below the postage and above the address. The endorsement may be handstamped, handwritten, typewritten, printed, or put on by any other method.

(c) Penalty-(1) Failure to pay. If postage is not paid at the appropriate rate in the manner provided for by paragraphs (a) and (b) of this section for

letters or other pieces of first- or thirdclass mail, the second-class publications or the third- or fourth-class parcels in which they are enclosed will be subject to the higher rate applicable to the enclosure.

(2) Concealment. Mailers are subject to a fine of not more than $100 if they knowingly conceal letters or other pieces of first- or third-class mail in secondclass publications or in third- or fourthclass parcels without paying the appropriate rate of postage on the enclosures in the manner provided for by paragraphs (a) and (b) of this section.

(a) Forwarding. Pieces of second-, third-, or fourth-class mail having other classes of mail enclosed under the combination mail arrangements provided for by § 29.2 are subject to the same conditions for forwarding as single pieces of second-, third-, or fourth-class mail (see Part 47 of this chapter). If the enclosure is first-class mail, that fact will not affect the conditions of forwarding.

(b) Return. (1) Undeliverable combination mail pieces, including those which cannot be forwarded, one part of which is first-class mail, shall in all cases be returned to the sender subject to the charge for return according to its class. See § 48.2 (b) through (f) of this chapter. The weight of the first-class piece will not be included when computing the charge for return of the second-, third-, or fourth-class portion.

(2) Any undeliverable combination mailing piece which does not include first-class matter shall be disposed of as provided in Part 48 of this chapter.

(3) If for any reason an undeliverable combination mailing piece, one part of which is first-class mail, is not returnable to the sender, it will be treated as provided in § 48.7(b) (1) of this chapter. (39 U.S.C. 4105) [30 F.R. 11604, Sept. 10, 1965; 30 F.R. 15213, Dec. 9, 1965]

§ 29.5 Special services.

Combination mailing pieces may be sent as special delivery or in the case of fourth-class parcels as special handling, and only one fee applicable to the parcel is required. Combination pieces may not be registered. They may be sent insured or COD, the insurance to cover only the value of the parcel.