Need to verify, but believe this is a .601 displacement, 7/8" bore, 1" stroke, 1/5 HP engine.
Dated to 1935-1936 based on the 1/8" thickness of the mounting lugs. Lugs are stamped "MADE IN U.S.A." and "B4378".
Possibly mentioned by Otto E. Curth in May, 1989 "Model Builder" Magazine:
"FIFTY YEARS AGO , I WAS ...
Encouraged by the comments of Al Ward
about flying in Chicago, Otto E. Curth of
2107 Center St., Northbrook, IL 60062,
writes to say that fifty years ago he was a 14-
year-old youngster at Lane Tech High
School in Chicago.
"This school was located right across the
street from Carl Goldberg's Model Research
Laboratory (M RL) which specialized in that
fabulous M RL brown rubber. This writer
hasn't seen anything like that since.
"Earlier, I belonged to the Hearst
newspaper syndicated column, T h e Junior
Birdmen.' I attended their indoor contests
arriving by streetcar. I designed and built a
seven-and-a-half foot gas model that I
called the 'Miss Chicago' using a Brown Jr.
for power. I figured if Maxwell Bassett could
call his models the Miss Philadelphia, I
could do no less. This model only flew
three or four times.
"The Lane High School had an active
model airplane club. Milton Huguelot was
a senior and the 1938 Nationals Champ at
the age of 16. Barney McShane was President and built the third Zipper ever made.
Mark Heller and D. Deschick (third in the
1938 Nats gas event) were sophomores.
"Meetings were held once a week and
gliders were flown every day after classes in
the fifty-foot high auditorium. Contests
were scheduled on a two to three week basis. Generally times of 40 to 44 seconds
would place as the auditorium's hardbacked seats were murder on the leading
edges of the gliders and at times snapped
the tail boom. Paper R.O.G. models were
also flown. Only one drawback: if you flew
too close to the 10 ft. square ceiling exhaust
fan, the model stuck to the grille until the
fans were turned off at 6 p.m.
"At MRL, all the talk was about the
Chicago Aeronuts. They held their meetings at Gage Park on the south side, about a
half hour ride on the streetcar. I started to attend meetings in the Fall of 1938. Wally
Simmers was President that year. Other famous members included Carl Goldberg, Ed
Lidgard, Milt Huguelot, Wally Fromm, Pete
Vacco, Sid Axelrod, Jerry Ritz, Dick Obarski, and others I had read about. What a
thrill for a frosh!
"At that time, to become an Aeronut
member, one had to pass certain flight requirements. Took me a year and a half to
meet the Junior requirement in indoor
HLG. In doing so, I broke Huguelot's Junior
Class A record. At that time, the Chicago
Aeronuts held more National records than
any other club.
"I was pleased to read Al Ward's com
ments of early Chicago modeling as I had
not known his whereabouts for the past 30
years. Al got my address from Bill Baker and
wrote. We graduated in the same class from
Lane H.S."