I don't have concrete evidence yet......but I strongly believe the yellow/brown sc F #30 460 " no prints" (except the super prints) printer's scraps were printed concurrently with broadleaf 460....
they are "sister" sheets and have about the same population as bl 460 and same subjects printed at the same time
frame
Ted , Chris, and myself have been working on this for a few years now
collage courtesy of C. brown