A nice sampling of the Long Island Railroad diesel roster is seen on a weekend in Oyster Bay in 1979.
An MP15AC leads a mid-day Oyster Bay Branch train across the Northern Blvd. overpass and down the hill between Greenvale and Roslyn.
Track work on the Main. Preparing to drop ballast viewed from the 5th Ave RR crossing.
LIRR Leaf Crusher awaiting eastbound MU train to Ronkonkoma. MP15AC 171 five hoppers and MP15AC 170 are waiting to proceed westbound to Morris Park for servicing.
The crew is stopped awaiting instructions to drop ballast for tie replacement.