Map Lovers’ Monday: Topography of Philadelphia from 1863
Map Lover’s Monday: Fairmount Park, 1869
Pennypack Park Map
Plans and maps of the Pennypack Creek Watershed in Philadelphia
Buried Treasures No. 1: The Franklin Sugar Refinery
Drawing Dock Creek
Requiem for a stream: Still House Run in Manayunk
Petition of manufacturers along the Schuylkill River in Philadelphia for a new upstream water supply, 1868
