has post office since

URI: https://gptkb.org/prop/has_post_office_since
4 triples
GPTKB property
Random triples
Subject Object
gptkb:Millersville,_Maryland 1841
gptkb:Cazadero,_California 1888
gptkb:Piru,_California 1888
gptkb:Millersville,_Anne_Arundel_County,_Maryland,_United_States 1841