Can anyone Identify this FLY FAIR seaplane? This photograph, from my family's collection, of a high-winged, dual rotary engine, amphibious airplane, probably in the 1930's, appears to be an excursion plane at a fair since it has &quot;FLY FAIR&quot; written on the wing.  It appears to have the ID number of NC-155, or NC-156, or NC-158. It is difficult to recognize the last number.  I have searched and searched and not only cannot find other photos of this particular plane, but I can't find any photos of an identical plane.  I'm looking for Make, Model, and any additional information you may have. Your help is greatly appreciated.
That is a Sikorsky S-38B
I am not sure about the registration. My guess is NC196H, but it is one out of this list:

NC158H,
NC159H,
NC195H,
NC196H,
NC197H,
NC198H,
NC199H,

See aircrafthistory.org.uk
The FLY FAIR marking may be a reference to the 1933/1934 Chicago World Fair / &quot;A Century of Progress International Exposition&quot;. Jamiec found this photo album by George Buivid on auction that documents a trip to the Chicago World Fair in Sikorsky's own S-38 aircraft:


Picture source: Flyingclippers.com Artist: Mike Machat 

source: Wikipedia original source: NACA Aircraft Circular No.79