- 75o Unknown from Nucleus
Unknown DJ 
78 Don Mark Bruce
Hasbrouck Heights- Don, Mark & Bruce
76a from Nucleus
From The Nucleus Yearbook
75l Unknown from Nucleus
Possibly Stevie Banks, who read the news
78 02 Nucleus 1978
Bruce Hancik & Mark Zdanowicz
left
Emmy
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.
78 01 Nucleus 1978
WNCE 1978- Studio A & Record Library Bill Harrity, Bruce Hancik & Mark Zdanowicz