Islip 

Islip Freight Sightings:   Click to go! 

South Side Railroad - Islip 1868   
2nd depot built: 1881

Islip c. early 1870's

Islip 1905 post card 
Collection: John Fusto

Sanborn Islip 1909 Freight  House Area
1909

  Emery drawing from 1902 Hyde Map
Collection: Stony Brook, NY

Islip Hyde Map 1915
Collection: Stony Brook, NY

The above are parts of the LIRR Land Plan. The ROW was about 66 feet wide, but on the north side the property runs diagonally to a width of about 125 feet. Room for a turntable, but not a wye.

Forty years ago. I met a Mrs. Foley who lived on Commack Road or Wingan-Hauppaugue Road near the station. She remembered the turntable.

In the early sixties, I met Tom Riley (Rahilly) who was a retired engineer who had qualified in 1892. He, if I remember correctly, used the turntable. Same with Sylvester Doxsey.  Info: Art Huneke

Sylvester P. Doxsey  was one of the oldest and most highly thought of LIRR engineers. Top of the seniority roster at one time. If, I recall correctly, Jeff Skinner told me that Sylvester Doxsey was in the cab of the first train out to Montauk in 1895.

Eyewitness accounts are more trustworthy, especially when one of them was Sylvester P. Doxsey himself! The property line on the north side of the tracks in your map shows it curving northeastward a bit then stopping and then paralleling the track. That would seem like it allowed for a lead track to also curve northeastwards, following that slight arc and connecting with the turntable sitting in that enlarged area. No additional property shown north for a wye. 
Info: Dave Keller

MP 41-42 1958

 MP 42-43 1958
Islip Schematic 1958

MP 43-44 1958

2006 Station Clock Tower view looking North

Speedometer test section sign, as per Special instructions 1038-A1 all STS are 1/2 mile in length and are located where speeds are 30 mph or greater; most are located near terminals.