Many of the photos show a woman in the passenger seat of a vehicle. The coiled cord visible through the window in Photo No. 156 made me wonder if this was taken at some sort of drive-in.

I’ve tried to collect these photos on the jump. Photos  36 and 87 appear to show the same woman, as do Photos 95 and 175.

There appear to be at least five vehicles involved, based on the interiors. One (No. 36) appears to have gray upholstered seats, one (No. 157) has a blue interior, one (No. 95) has been stripped down to the body and shows white metal, one (No. 150) has a plain interior of metal painted white. The interior shown above in Photo 156 doesn’t seem to be in any other picture.

ALSO

Grim Sleeper Nos. 4 and 52
Grim Sleeper Nos. 48-49
Grim Sleeper Nos. 51-53
Grim Sleeper Nos. 56-57
Grim Sleeper Nos. 59 and 81
Grim Sleeper Nos. 75-78, labrets
Grim Sleeper Nos. 75 and 77, Kendreay
Grim Sleeper No. 91
Grim Sleeper Nos. 96-96, Maxine
Grim Sleeper No. 139, The Mail Slot
Grim Sleeper Nos. 141-142, Deborah B. Cleveland
Grim Sleeper No. 149
Grim Sleeper No. 166, Ms. D. Johnson