Thanks to Google, Yahoo, rail mags and a couple of EL books, I found some more survivors.
RS-3ms (all built w/1200 HP engines from E-8s)
1. Housatonic RS-3m #9935 (built 4/51; rebuilt 3/79 by CR)
DL&W #910>EL #1048>CR #5264>CR #9935>purch by Housatonic 5/86
2. Maryland & Delaware RS-3ms
A. #1201 (built 3/52; rebuilt 6/79 by CR)
DL&W #911>El #1049>CR#5265>#CR #9999>DCLR #1201
B. #1202 (built 3/50; rebuilt 4/77 by CR)
DL&W #902>EL #1040>CR #5256>CR #9926>DCLR #1202
C. #1203 (built 3/52; rebuilt 1/79 by CR)
DL&W #914>EL #1052>CR #5268>CR #9942>DCLR #1203
3. Central Michigan Railway GP-7 #9210 (built 10/50)
Erie #1207>EL #1207>CR #5237
4. Eastern Idaho GP-35 (built 8/65)
EL #2563>CR #3669>EIRR #3669>WAMX #3524
NOTE: still operates in Idaho, sole GP-35 survivor from EL
Just a few tidbits to add! Scot, I've been enjoying your pages for about 2 years now, so contributing is the least I can do to say
THANKS!!! 