CK z
Cedar Knolls- enthusiastic baseball fans- 76b Unknown from Nucleus
Unknown DJ 
77 02c from Nucleus
Fashion Show
75g Unknown- Record Library from Nucleus
Unknown DJ, Digging through the 45s The 45 RPM filing system was less formal than for LPs. You can see the edges of the LP labels, which tied to the index cards on the left. LPs were sorted alphabetically by artist, then numerically by date received at the station...examples follow.