Train No. 507 goes back at least as far as summer, 1960 (probably a lot longer). It's listed in my 6/19/60 Form LI-1 along with No. 521 as the only two trains to LIC W/B (both OB branch trains).
The only trains E/B were Nos. 552 and 554, also O/B branch trains; no train No. 560 listed at all.
The only trains E/B were Nos. 552 and 554, also O/B branch trains; no train No. 560 listed at all.
Ocala Mike (formerly Hillside Mike and Deer Park Mike)