Other educational materials acceptable for the fourth class rate are 16mm films, printed music, printed objective test material, sound recordings and manuscripts for books or periodicals. The weight limit for book rate and parcel post is 70 pounds, and the size limit is 108 inches in length and girth combined. Materials such as library books, films, film catalogs, bound volumes of academic theses, library materials, catalog guides or scripts for some of the materials exchanged between schools, colleges and libraries may be mailed at a special library rate. All articles of international mail other than letters must be identified as to content and must be enclosed in a box, envelope or other covering. Most countries accept registered and insured mail, but there is no certified mail to any international location.
Articles sent by parcel post require customs forms declaring contents and value.
All international mail should be hand carried to the SIUE Mailing Service. Contact the SIUE Branch Post Office for cost and additional information. Certain international locations accept Express Mail. Registered mail is insured and is the most secure service the Postal Service offers. It incorporates a system of receipts to monitor the mail's movement from the point of acceptance to delivery.