The Thomas H. Gale House is one of three houses along Chicago Avenue in Oak Park, two of which belong to a group known as American architect Frank Lloyd Wright's "Bootleg Houses." This trio of houses, including the Robert P. Parker House and the Walter Gale House, were designed by Wright independently while he was still employed by Adler and Sullivan. Architect Louis Sullivan loaned Wright money during the construction of his own home and studio and Wright was working it off at the firm; independent work was forbidden by Sullivan. In all, Wright designed at least eight "bootleg houses" moonlighting while still under contract with Sullivan. When Sullivan found out about the side projects, in late 1892 or early 1893, Wright was dismissed. The Thomas Gale House is one of at least four which still stand; sources vary as to the exact numbers.