Description: Photograph used for a story in the Daily Oklahoman newspaper. Caption: "A few of the instruments and books used by Ferdinand Rudolph Hassler are studied by Dr. Hassler and his brother John. Dr. Hassler has one of the original weights belonging to the bureau of weights and measures, and his brother holds a logarithmic table compiled by the professor."
Date: February 14, 1958
Creator: Peterson, Dick
Item Type: Refine your search to only Photograph
Partner: Oklahoma Historical Society