In the Aug '61 Model Railroader -
pg 10 Trade Topics - lost wax frames for SR&RL2-4-4T #9 ($2.50 pair

)
Plans were in the June '57 MR. Also in April '52
Moody's "Maine Two Footers" was mentioned.
Nov. '61 pg 18 On2 Observation Railing for Rangeley
Also for other cars and RRs - SR&RL, B&B, F&M & KC
($1.50 for set of 4

)
So 2' modeling was well represented in the 1960s.