In addition to the 35 bathrooms in the White House, President Truman also had a couple in other locations. Below are some photos from the Harry S. Truman Library and Museum.
This photo, taken in 1942, displays Truman's bathroom on the presidential yacht - U.S.S. Williamsburg.
Below is the sink in Truman's bathroom while he stayed at the Laranjeiras Palace in Rio de Janiero. Following that is a photo of his regal toilet and bathtub.
Source: The Harry S. Truman Library and Museum