Probably a silly question, but did LNER articulated coaches have buffers on the 'in between' coach ends, or just at the outer ends of each set? Similarly, were there couplings between cars, or was the bogie also the coupling? My main source of reference is Volume II of David Jenkinson's British Railway Carriages, but having looked, I'm still not sure of the answers.
Off on a tangent, was there ever a Volume III in the carriage series, by Jenkinson, from 1953 onwards?
Thanks!