THE GREAT MULLARD MAGIC BLOG — rubber dolly

How I smiled when I saw this pulp magazine cover from 1966.   Bet you never got a blue print for this particular project free with Wireless World and interestingly, from the 'dolly's' midriff trap door she seems to be solid state - unless there are a nice pair of   output beam tetrodes situated a little higher up - could that be a brace of 807s as I am sure I can see some top caps.  Wonderful stuff indeed.