Milestown's location is shown on an old atlas map. Some of these atlases can be found in the main branch of the Philadelphia Library.
Baist's atlases & Maps. Old York Rd was originally Willow Grove Turnpike. Milestown M.E. Church was located near the present (2012) intersection of Cheltenham Ave & Old York Rd. There are still a few churchss near that location. Union Baptist Church appears to have been in the same location as the nursing home now standing at Cheltenham Ave between 7th St(formerly Union Ave) and Oak Lane.( Map of Phila. 1890 G.M. Baist reference)