Incoming Resources
- A new shipworm from Panama (with one plate), by Paul Bartsch
- Maritime operations, arrangement between the United States of America and Panama, signed at Panama March 18, 1991
- Postal, express mail service, agreement, with detailed regulations, between the United States of America and Panama, signed at Panama and Washington, March 29 and May 21, 1985
- Geology and paleontology of Canal Zone and adjoining parts of Panama, description of Tertiary mollusks (gastropods: Columbellidae to Volutidae), by W. P. Woodring
- The birds of the Republic of Panama part 1, Tinamidae (Tinamous) to Rynchopidae (Skimmers), by Alexander Wetmore
- Defense, security of military information, agreement between the United States of America and Panama, signed at Panama August 17, 1984
- Narcotic drugs, mutual cooperation agreement between the United States of America and Panama, signed at Panama January 10, 1990
- Aviation assistance, memorandum of agreement between the United States of America and Panama, signed at Panama and Washington, January 24 and February 15, 1990 with annexes
- Geology and paleontology of Canal Zone and adjoining parts of Panama, description of Tertiary mollusks (pelecypods: Propeamussiidae to Cuspidariidae; additions to families covered in P 306-E; additions to gastropods; cephalopods), by W. P. Woodring
- Systematic notes concerned with avifauna of Panama, by Alexander Wetmore
- Amphibians and reptiles collected by the Smithsonian biological survey of the Panama canal zone, by Karl Patterson Schmidt
- The birds of the islands of Taboga, Taboguilla, and Uravá, Panamá, by Alexander Wetmore
- Geology and paleontology of Canal Zone and adjoining parts of Panama, description of Tertiary mollusks (additions to gastropods, scaphopods, pelecypods: Nuclidae to Malleidae), by W. P. Woodring
- Further additions to the birds of Panama and Colombia
- Panama, a country study, Federal Research Division, Library of Congress ; edited by Sandra W. Meditz and Dennis M. Hanratty
- Judicial assistance, arrangement between the United States of America and Panama, signed at Panama December 28, 1990
- Geology and paleontology of Canal Zone and adjoining parts of Panama, description of tertiary mollusks (gastropods: Eulimidae, Marginellidae to Helminthoglyptidae), by W. P. Woodring
- The U.S. military intervention in Panama, Operation Just Cause, December 1989-January 1990, by Lawrence A. Yates
- Postal, money orders, agreement between the United States of America and Panama, signed at Montevideo March 15, 1991
- Additions to records of birds known from the Republic of Panamá, by Alexander Wetmore
- Annual report of the Canal Zone Experiment Gardens
- Mapping, arrangement between the United States of America and Panama, signed at Washington and Panama, January 29, 1986
- Taxation, shipping and aircraft, agreement between the United States of America and Panama, amending the arrangement of January 15, February 8 and March 28, 1941, effected by exchange of notes dated at Panama July 30 and December 30, 1987
- Additional forms of birds from Colombia and Panamá, by Alexander Wetmore
- Survey of marine communities in Panama and experiments with oil, by Charles Bireland, Amada A. Reimer, Joyce Redemske Young