on Wed Oct 11 16:45:43 2017, in response to Re: [PHOTOS] R-42's In Colorado (Newkirk Photos), posted by Q Brightliner Harry on Wed Oct 11 00:57:03 2017.
There was a small group of R-40Ms, that had the same rollsigns as the R-42 N group and they had signs for the EE, GG and N. When first delivered, they were numbered 4350-4449 and the last R-40 slants were numbered 4450-4549. At some point, the numbers on both series were swapped so that there was a continuous group of modified R-40s and R-42s starting with 4450. If I recall, the QJ, M, LL group were also the ones with the RR signs. The B group also had A and AA signs. If I recall, the E/F group of cars also had A signs with Rockaway destinations since for a brief time, the TA stopped using HH for the Rockaway shuttles and the R-40s and 42s that remained in the Rockaways used A signs for both the Rock Pk shuttles and the Round Robin.