Matches in DBpedia 2016-04 for { ?s ?p <http://dbpedia.org/resource/Category:Postage_stamps_of_the_United_States> }
- Pan-American_invert subject Category:Postage_stamps_of_the_United_States.
- Postage_stamps_and_postal_history_of_the_Confederate_States subject Category:Postage_stamps_of_the_United_States.
- Postage_stamps_and_postal_history_of_the_United_States subject Category:Postage_stamps_of_the_United_States.
- Presidential_Issue subject Category:Postage_stamps_of_the_United_States.
- Prominent_Americans_series subject Category:Postage_stamps_of_the_United_States.
- Raising_the_Flag_at_Ground_Zero subject Category:Postage_stamps_of_the_United_States.
- Series_of_1902_(United_States_postage_stamps) subject Category:Postage_stamps_of_the_United_States.
- Statue_of_Liberty_Forever_stamp subject Category:Postage_stamps_of_the_United_States.
- Territories_of_the_United_States_on_stamps subject Category:Postage_stamps_of_the_United_States.
- Trans-Mississippi_Issue subject Category:Postage_stamps_of_the_United_States.
- Transportation_coils subject Category:Postage_stamps_of_the_United_States.
- U.S._Parcel_Post_stamps_of_1912–13 subject Category:Postage_stamps_of_the_United_States.
- U.S._presidents_on_U.S._postage_stamps subject Category:Postage_stamps_of_the_United_States.
- U.S._space_exploration_history_on_U.S._stamps subject Category:Postage_stamps_of_the_United_States.
- US_Regular_Issues_of_1922–31 subject Category:Postage_stamps_of_the_United_States.
- Washington-Franklin_Issues subject Category:Postage_stamps_of_the_United_States.
- Western_Cattle_in_Storm subject Category:Postage_stamps_of_the_United_States.
- Z_Grill subject Category:Postage_stamps_of_the_United_States.
- Category:Provisional_stamps_of_the_United_States broader Category:Postage_stamps_of_the_United_States.