I found my self on a Wikipedia page on desks in the Oval Office. On their it talks about the fire that happened in 1929. It said that Hoover received a new desk from some Grand Rapids furniture makers. Using a simple google search, I haven't found which furniture maker made this desk. Was it several companies working together, or a single specific maker? I work for an office furniture company and it has me curious.
It's currently at the FDR Presidential Library, and they're best equipped to give you an answer if you contact them at Museum.FDR@nara.gov or visit this page for other contact information.