Okay, let's see how well we can do based on a quick review of the image.
Vehiclea) early-to-mid 1930s
b) USA chassis
c) school bus
(Have you altered the colors?)
Builder(as yet unidentified)
Otherd) exhibit in museum or similar venue representing...
e) man wearing suit presenting vehicle to...
f) person wearing uniform/blue-collar/peasant clothing
g) background mural suggests rural location
h) tropical plant suggests location someplace other than Europe/North America
i) presentation suggests a moment of some historical (even if only local) significance
Did I get anything right?