Substitute pre-1916 boundary in vicinity of Cheltenham and Hasbrook Avenues
Substitute pre-1906 boundary in vicinity of Cobbs Creek at Darby Creek
Split 1916 way into 2 (separate streets)
Split ways at beginning and end of pre-1916 county boundary
Split ways at beginning and end of pre-1906 creek boundary
Combine stream segments from 1905 ascertainment/1906 change
Split ways at beginning and end of pre-1927 Bow Creek boundary
Merge stream segments into one way
Add lines associated with 1906, 1916, and 1927 Philadelphia boundary changes
Remove non-existent Chester County island within Delaware County