Those photos, at the top of this thread, here's a possible ID:
After searching in
NY Times web-archives, it listed an altitude record set at St. Louis in Feb'1930.
?? Possible ID,
Dwight ("Barney") Zimmerly, at St. Louis, Barling NB3 with Lambert motor ...
From
NYTimes, February 17th,
1930, pg 9
[available in NYT’s web archives]:
“Altitude record is set At St. Louis”
“St. Louis, Feb. 16 -- Taking off from the small snow-covered field [Forrest Park] ... Barney Zimmerly ... Climbed to approximately 27350 feet, according to his barograph, and set what is indicated to be a new world’s record for light planes....
“... The machine is an open-cockpit low-wing monoplane, built for two persons and adapted for training and sport flying.
“The pilot had ... his heavy flying clothes, a mask and the customary helmet and goggles.... He carried two bottles of oxygen for the rare upper air....”
Photo of an NB-3 aircraft with two cockpits:
http://aerofiles.com/nicbeaz-nb3.jpg
So far there's no other good photo of any "Barney Zimmerly" to verify against these unlabeled images from the on-line
Globe-Democrat collection.