These photos were found in the museum.
I believe these were taken in 1928. President and Mrs. Coolidge must have invited Hoover to the White House. President Coolidge and President Elect Hoover were not great friends. However the did present a united front for the American people for these photographs.
Drysdale Perry of Superior Wisconsin took the first photo it is Number 67. The last photo is Number 64. The middle photo could also be by Drysdale Perry however it is not marked.
I have no idea who donated these to the museum or how they came about owning them.