The Katonah Historical Museum at the Katonah Village Library has a wonderful collection of Katonah archival media.
Here is a circa 1919 Katonah map – interesting features include lumber yard railroad sidings and buildings, location of the school, buildings, and station shown in videos below, and names and plots held by large landowners: Katonah Village 1919 Map
New York Times Article – February 2, 2012
Check out these fantastic 16mm videos of Katonah Village circa 1930s courtesy of the Katonah Historical Museum at the Katonah Village Library.
page photo courtesy of the Katonah Village Library
