O) 1858 PUERTO RICO, FRONT LETTER FROM LARES, FECHADOR DATE TYPE 1854, PARRILLA COLONIAL, 1/2 real MANUSCRIPT, AND STAMP
O) 1889 PUERTO RICO - PORTO RICO - US OCCUPATION, ULYSSES GRANT 5c, MILITARY STATION, FROM PONCE P.R TO NEW YORK
O) 1898 PHILIPPINES, MORTUARY LETTER, SPANISH AMERICAN WAR, RARE DESTINATION AND TRANSIT TO HONG KONG, RARE USAGE
O) 1899 CARIBBEAN, USS OCCUPATION, SPECIAL PRINTING IN DARK BLUE, ULYSSES GRANT SC 2255c on 5c blue, OVERPRINTE SURCHARGE, XF
O) 1899 CIRCA - PHILIPPINES - US POSSESSIONS, GARFIELD 6c OVERPRINTED IN BLACK, TO TACANA
O) 1899 PHILIPPINES ISL´DS, US OCCUPATION, MILITARY STATION, WORCESTER MASS RECEIVED, XF
O) 1899 PHILIPPINES, PENALTY . PRIVATE - POST OFFICE - MILITARY STATION - OFFICIAL BUSINES, ULYSSES GRANT 5c, WEBSTER 10c, XF
O) 1899 PHILIPPINES- US POSSESSIONS, SOLDIER´S LETTER , PHILIPPINE ISLANDS - MANILA, CHAPLAIN, WASHINGTON 2c POSTAL STATIONERY, XF
O) 1899 PHILIPPINES. US OCCUPATION,PENALTY FOR PRIVATE - WAR DEPARTMENT - OFFICIAL BUSSINES - POSTAGE DUE WASHINGTON 2c, RECEIVE
O) 1900 CIRCA - PHILIPPINES. US OCCUPATION, TRANSMISSISIPI ISUE, GARFIELD 6c, INDIAN HUNTING BUFFALO 4c, TROOPS GUARDING
O) 1900 CIRCA- PHILIPPINES - USS OCCUPATION, COMPLETE LETTER, WASHINGTON 2c POSTAL STATIONERY - STATIONARY, TO INDIANA
O) 1900 PHILIPPINES - US OCCUPATION, MILITARY STATION - MANILA, USAGE OF US SOLDIER, ULYSSES GRANT 5c, NICE COVER, XF
O) 1900 PHILIPPINES, US OCCUPATION, SOLDIER LETTER - POSTAGE DUE - PENALTY FOR PRIVATE - WAR DEPARTMENT - OFFICIAL
O) 1900 PUERTO RICO , US OCCUPATION, FROM LAS MARIAS P.R. , WASHINGTON 2c OVERPRINT, XF
O) 1900 PUERTO RICO, OVERPRINTE PORTO RICO ON WASHINGTON 2c, TO ARROYO P.R., DE SOLA AND RAMIREZ, XF
O) 1900 PUERTO RICO, US OCCUPATION, FROM PLAYA PONCE - PORTO RICO, ULYSSES GRANT POSTAL STATIONERY 5c- STATIONARY, TO LIVERPOOL- ENGLAND
O) 1900 PUERTO RICO - MAGUAYO - MACUAYO P.R. - PORTO RICO, US OCCUPATION, WASHINGTON 2c OVERPRINTE, TO SAN JUAN P.R.
O) 1901 GUAM, US POSSESSIONS, ENGINEER OFFICE US ARMY, SPECIAL DELIVERY 10c OVERPRINTED IN RED - MESSENGER RUNNING, WASHINGTON 2c
O) 1901 PHILIPPINES, FROM MANILA P.I., WASHINGTON 2c POSTAL STATIONERY - STATIONARY, TO NEW YORK - USA
O) 1901 PUERTO RICO - PORTO RICO, US OCCUPATION, RETURN RECEIPT, WILLIAM SHERMAN 8c, DANIEL WEBSTER PORTO RICO OVERPRINTE
O) 1901 PUERTO RICO- JOSE CERECEDO AGENCY, ULYSSES GRANT SC 281 5c, TO GERMANY, NEW YORK TRANSIT, XF
O) 1902 GUAM, US POSSESSIONS, AGAÑA GUAM, ISLAND OF GUAM, JAMES A. GARFIELD 5c, TO GERMANY, XF
O) 1902 PUERTO RICO - PORTO RICO - US OCCUPATION, RARE, SHERMAN, REGISTERED FROM MAYAGUEZ PORTO RICO, THE CONTINUING
O) 1902 PUERTO RICO. US OCCUPATION, JACKSON 3c, GRANT 5c, POSTAL STATIONERY FROM PONCE VIA NEW YORK TO GERMANY
O) 1903 PHILIPPINES - MANILA P.I, VIA HONG KONG VIA ZAFIRO, TO REMSCHEID, ULYSSES GRANT 5c, XF
O) 1903 PHILIPPINES - MANILA P.I. - US OCCUPATION, E.S IN LACRE - SEALING WAX, ULYSSES GRANT 5c, ENRIQUE SPITZ, TO REMSCHEID - GERMANY, XF
O) 1903 PUERTO RICO MAYAGUEZ P.R. - PORTO RICO, US OCCUPATION, WEBSTER 10c, VIA NEW YORK, FRENCH RECEIVER, EX-MOLESWORTH
O) 1904 PHILIPPINES - MANILA, US OCCUPATION, FRANKLIN 1c, PHILIPPINES SURCHARGE, ENRIQUE SPITZ, TO REMSCHEID - GERMANY
O) 1905 PHILIPPINES - MANILA P.I. FRANKLIN 1c, ARCHITECTURE . CULTURE - HOME -THRESHING RICE - ECONOMIC ACTIVITY IN MANILA, POSTAL CARD, XF
O) 1906 PHILIPPINES - US OCCUPATION, PENALTY FOR PRIVATE USE - OFFICIAL MAIL, CONSTABULARY, LINCOLN 4c, TO MANILA, XF
O) 1906 PHILIPPINES . US OCCUPATION, NEGROS ISLD, PENALTY FOR PRIVATEUSE, OFFICIAL MAIL, LINCOLN 5c, FRANKLIN 1c, THE PROVINCIAL
O) 1906 PHILIPPINES, US OCCUPATION, PENALTY FOR PRIVATE - CONSTABULARY, RARE TOWN, FROM PAMPANGA, WASHINGTON 2c, TO MANILA
O) 1906 PHILIPPINES- US OCCUPATION, PENALTY FOR PRIVATY - CONSTABULARY, FROM MALOLOS BULACAN, RARE TOWN, JACKSON 3c, XF
O) 1914 MEXICO - US OCCUPATION, FROM TOLUCA, TRASATLANTIC - STEAM BOAT, OLD POSTAL CARD, COAT - FLAG. ANCHOR, ENGRAVED
O) 1921 PUERTO RICO - CENTRAL AGUIRRE P.R., - R.Y. HOLLINGSWORTH, WASHINGTON 2c, MORSE CODE REVERSE, TO INDIANAPOLIS, XF
O) 1925 CANAL ZONE, OVERPRINTE POSTAGE DUE WASHINGTON 2c, STRIP BY 3 STAMPS
O) 1926 CIRCA - POSTMASTER BALBOA HEIGHTS -CANAL ZONE - US POSSESSIONS, WOODROW WILSON - OVERPRINTED IN RED CANAL ZONE, MAJ
O) 1927 CANAL ZONE - EMPIRE, MAP OVERPRINTE , FERNANDEZ DE CORDOBA OVERPRINTE, TO SWEDEN
O) 1928 CANAL ZONE,- US POSSESSIONS, NATHAN HALE, CANAL ZONE OVERPRINTE IN RED, THE PANAMA CANAL - OFFICIAL BUSINES, TO USA
O) 1929 CANAL ZONE, BALBOA HEIGHTS, MAJ GEN. GEORGE WASHINGTON GOETHALS -POSTAGE DUE OVERPRINT LINDBERGH-FIRST FLIGHT
O) 1931 CANAL ZONE. US POSSESSIONS, GAILLARD CUT SCT C7 5c green, AIRMAIL - R. S. CARTER, FROM BALBOA HEIGHTS, TO USA
O) 1931 CIRCA - CANAL ZONE, GAILLARD CUT SC C11 20c red violet. FROM CRISTOBAL TO USA, VIA AIRMAIL, CENSORSHIP, XF
O) 1932 CANAL ZONE, FIRST FLIGHT CRISTOBAL MEXICO, GAILLARD CUT SC C7 5c, GAILLARD CUT SC C10 15c, THE PANAMA CANAL, AIRMAIL
O) 1934 CIRCA - CANAL ZONE, GEN. GEORGE WASHINGTON GOETHALS SCT 117 - PANAMA CANAL OPENING, INSTITUTE FOR SOCIAL AND ECONOMIC RESEARCH, TO USA
O) 1935 PHILIPPINES. USS OCCUPATION, VIA FLYING BOATS NETHERLANDS ROYAL NAVAL AIR FORCE, MANILA, JOSE RIZAL SC 383 2c, KING
O) 1936 CANAL ZONE, GAILLARD CUT SCT C7 5c, GENERAL GEORGE WASHINGTON GOETHALS 3c - PANAMA CANAL OPENING, AIRMAIL, THE NEW YORK TIMES
O) 1936 CANAL ZONE, US OCCUPATION,HAMBURG AMERICA LINE ENVELOPE, GAILLARD CUT SC 107 5c, MAJ. GEN. GEORGE WASHINGTON
O) 1937 CANAL ZONE, FIRST FLIGHT CANAL ZONE TO MIAMI, AIRPLANE, GAILLARD CUT SC C13 40c, MIT LUFTPOST PAR AVION BY AIRMAIL, TO ARGENTINA