Gents -- I'd like to know the first and last years the 5100 and 5100B appeared in the catalog section of the ARRL handbooks. If any of you would take a look in your stashes (1950 - 1962), I'd appreciate it. I've only got a 58 and 64, and the 5100B is in the former, but not the latter. 73 Mark K3ZX