One year anniversary of the generalgouvernement first day of issue postage stamp cover

http://lod.ehri-project-test.eu/units/us-005578-irn559614-irn27757 an entity of type: RecordSet

The postage stamp cover was donated to the United States Holocaust Memorial Museum in 1997 by an anonymous donor. 
1940 October 26 
irn27757 
One year anniversary of the generalgouvernement first day of issue postage stamp cover 
overall: Height: 5.875 inches (14.923 cm) | Width: 4.125 inches (10.478 cm) 
No restrictions on access 
No restrictions on use 
Plain white index card; recto: three adhesive postal stamps, one in green depicting young girl,"12+38/GENERALGOUVERNEMEN"; one in red depicting older woman in shawl,"24+26/GENERALGOUVERNEMEN"; and one in blue depicting man with fur collar, 30+20/GENERALGOUVERNEMEN"; two black ink cancellation stamps bearing image of Nazi German National Symbol,"EIN JAHR GENERALGOUVERNEMENT/WARSCHAU 26.X.4" 

data from the linked data cloud