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The Highway Post Office SystemPostal WagonsRailway Post OfficesHighway Post OfficesHPO PersonnelHPO RoutesThe Demise of HPOsAbout This CollectionHPO-2, South Bend, Peru & IndianapolisHPO-2A, South Bend & IndianapolisHPO-17, Indianapolis & VincennesHPO-17A, Indianapolis & EvansvilleHPO-24, Fort Wayne & IndianapolisHPO-98, Cincinnati OH & IndianapolisHPO-107, Evansville & Nashville TNHPO-113, Indianapolis & Decatur ILHPO-114, Indianapolis & Peoria ILHPO-114A, Indianapolis & Urbana ILHPO-119, Elkhart & IndianapolisHPO-119A, Gary & IndianapolisHPO-121A, Louisville KY & EvansvilleHPO-122, Louisville KY & St. Louis MOHPO-122A, Louisville KY & PrincetonHPO-122B, Princeton & St. Louis MOHPO-151, Fort Wayne & Cincinnati OHHPO-152, Grand Rapids MI & Fort WayneHPO-176, Toledo OH & ElkhartHPO-196, Vincennes & Harrisburg ILHPO-197, Vincennes & Springfield ILHPO-217, Nashville TN & St. Louis MOHPO-293, Indianapolis & Champaign ILHPO-304, Evansville & St. Louis MOIndiana State Fair HPO ExhibitionsSummary Listing
