There are a few track maps around, but the one's in the office are much to large to copy. I haven't opened them to see dates.
All of the stations had a run around type siding near them. Only Curriers had the one that went around the depot to the west side. It was used for unloading at a Mill that was located next to the depot. Java Center siding was west of the main away from the depot. Remains of it are still in place. The North Java one was to the east of the main away from the depot. Johnsonburg was to the west of the main. Varysburg was to the east and north of the depot. Perry's had a run around, while Earl's had only a single switch.
O'Dell and Eddy had several sidings along the way for log loading, though I don't think they were used much after the 1940's. They had one at Arcade near Genesee Road, at Curriers south of the run around. At Java Center south of the runaround, but north of the Richardson & Beebe siding. There was also one at Varysburg and Earl's.
The other sidings that were in place for customers I'll list starting from the interchange. There was 2 for Yansick Lumber (originally O'Dell & Eddy before 1966), one for Aronson's, 1 for Agway, 1 for Drake's (at West Main Street Crossing, removed during last year's track rehab), the scale track (behind Motorola/Prestolite), the run around for the B&S freight house at Park Street (also used by GLF), Essex (off the main just south of the Sand House before the wye), KR Wilson off the coach track at Arcade, The Coal Storage track in the parking lot, Borden's (this broke into 3 tracks inside the plant), Purina, fuel storage tank (where current fire hall is), Java Center the Richardson & Beebe, Conroy's north of the siding, Reisdorf's (the original one was south of Perry Road near where the fertilizer track is today), then McCormick & Schwab also south of Perry Road, but to the west, at Attica there were 2 team tracks either side of the main at Exchange Street, then the Prison lead (which connected with the Erie at the Prison), the Westinghouse Foundry (which also connected to the Erie through the plant), another team track south of the wye and then the wye and connection to the Erie.
Many of the sidings around Arcade lasted quite some time. I remember pieces of the Yansick and Aronson's switches when I started. The Bordens, Purina and fuel tank switches were probably removed during the track rehab in the early 80's.
The other sidings that were added later at Arcade were the Arcade Dimension's plant in 1974 (still in use by the railroad) and the Prosil plant across the tracks, now switches removed but rail on siding still in place.