| Product List |
 | Historic Print (L): [Postal service offices with man seated at desk, U.S. Post Office, Washington, D.C.] / N  | $57.00 | | Historic Print (L): [Postal workers sorting mail, U.S. Post Office, Washington, D.C.] / National Photo Co., | $57.00 | | Historic Print (M): [Postal service offices with man seated at desk, U.S. Post Office, Washington, D.C.] / N | $47.00 | | Postal, express mail service : agreement, with detailed regulations, between the United States of America and Costa Rica, signed at San Jose and Washington, ... and September 14, 1989 (SuDoc S 9.10:11690) | | | Postal, express mail service : agreement, with detailed regulations, between the United States of America and Paraguay, signed at Asuncion and Washington, ... 13 and August 22, 1988 (SuDoc S 9.10:11643) | | | Postal, express mail service : agreement, with detailed regulations, between the United States of America and El Salvador, signed at San Salvador and Washington, ... 29 and October 6, 1989 (SuDoc S 9.10:11689) | | |