Location history
A full narrative history section
Originally this building was built by the Alpha Tau Omega Fraternity in 1904. The entire structure burned to the ground on February 22, 1914, but was covered by insurance. Using the existing walls and on the same foundation, the current structure was built and dedicated on April 15, 1915.
The building was rented out to the Eisenhowers during the summer of 1918 while Eisenhower was commander of Camp Colt. A tank training camp based in Gettysburg.
The building now serves as the Eisenhower Institute Building.
It was not easy finding the history of this building, but I found a paper published by Brett Jackson in the Fall of 2006, that discusses the history of building. You can find that paper here.
Source: Brett Jackson Paper