There was a Plachter Cadillac, located at Adams Avenue and Roosevelt Boulevard in Northeast Philadelphia.
Pletcher Ford was in Jenkintown PA, I drove by it everyday on my way to high school. My 68 GT350 yellow convertible was sold originally there. Probably saw my eventual car on the lot as I would stop and walk among the rows of Shelbys and there was a Cobra corral in the showroom (normally a 289 and 427).