| USA APO Army Postal Service Baseball cover in Germany |
| WWI AEF APO cover + LETTER 161st Infantry April 1918 |
| WWII APO 961 Cover MAUI HAWAII 1944 censored |
| WWI AEF APO 776 cover 91st Division Jan 1919 censored |
| APO 411 WWII 1945 Postal History Cover US ARMY AUSTRIA |
| WWII APO 945 Cover Cordova ALASKA March 1943 Censored |
| WWII APO 256 Cover GERMANY 1945 censored 6th Armored |
| WWII APO 845 Cover PUERTO RICO 1942 Prov Censor |
| WWI AEF APO cover Signal Corps School FEB 1918 censored |
| WWII APO 729 Cover ALASKA 11th Fighter Sqdn Censored |
| WWI AEF APO cover Hospital # 167 NICE CACHET censored |
| WWII APO 942 Cover + Letter ALASKA 1944 censored |
| WWII APO 867 Cover Saint Lucia 1944 Censored |
| APO 768 1944 cancel on cover with APO 374 sender |
| WWII APO cover FORT CLAYTON CANAL ZONE censored |
| WWI AEF APO 705 cover 23rd Engineers April 1918 censor |
| WWI AEF APO 715 cover 42nd Division Feb 1918 censored |
| WWI AEF APO cover 80th Division Dec 1918 censored |
| APO 198 WWII 1944 Cover US ARMY PHILIPPINE ISALNDS |
| WWI AEF APO cover 91st Division 363rd INF censored |
| APO 872, 1947 Cover US ARMY 3rd Repl Depot |
| APO 394 WWII 1944 Cover US ARMY Censor NAPLES ITALY |
| 1943 V-MAIL APO 302 Cover WWII w/ letter to hospital |
| WWII APO 945 Cover Cordova ALASKA 1942 Censored |
| WWI AEF APO cover Central Medical Lab Dec 1918 censored |
| APO 928 WWII 1944 Cover US ARMY Censor AUSTRALIA |
| WWII APO 709 Cover GUADALCANAL 1943 USN Cancel 13th AAF |
| APO 625 WWII 1943 Cover US ARMY Censor ACCRA GOLD COAST |
| APO 957 WWII 1942 Cover US ARMY Censor 804th Engrs |
| APO 89 WWII 1945 Postal History Cover US ARMY FRANCE |
| APO 638 WWII 1945 Cover US ARMY GERMANY APO 124 |
| WWII APO 78 Cover GERMANY July 1945 |
| WWII APO 944 Cover Cold Bay ALASKA 1943 Censored |
| WWII APO 234 Cover GUAM Dec 1945 |
| WWII APO 145 Cover GERMANY Aug 1945 |
| WWII APO 825 cover 1942 Albrook Field CANAL ZONE censor |
| WWII APO 709 Cover GUADALCANAL 1943 13th Air Force |
| WWI AEF APO 730 cover 116th Signal Bn May 1918 censor |
| APO 90 WWII 1944 Cover US ARMY Censor FRANCE |
| APO 783 WWII 1943 Cover US ARMY Censored IRAQ APO 797 |
| WWII APO 45 cover NOV 1943 ITALY 45th Division censored |
| APO 639 WWII 1944 Cover US ARMY Censor TOOME N. IRELAND |
| APO 469 Cover JAPAN 1947 11th Airborne Division |
| WWII APO 390 Cover INDIA 1945 Censored |
| APO 914 WWII 1943 Cover US ARMY Censored CANTON ISLAND |
| APO 453 WWII 1944 Cover US ARMY SOLOMON ISL w/ letter |
| WWI AEF APO 780 cover from COLONEL Jan 1919 censored |
| APO 306 WWII 1943 Cover US ARMY Censored ITALY APO 790 |