OBS/6/9/3/1/1/C1
General subject negatives - C (part 1)
c1958-c1987
OBS/6/9/3/1/1/C2
General subject negatives - C (part 2)
c1959-c1991
OBS/6/9/3/1/1/D
General subject negatives - D
c1958-c1989
OBS/6/9/3/1/1/E
General subject negatives - E
c1959-c1989
OBS/6/9/3/1/1/F
General subject negatives - F
c1960-c1989