author
d. 1991
A historian of American industry and technology, he wrote clear, practical books that opened up subjects like steelmaking and petroleum for general readers. His work grew out of years at the Smithsonian, where he helped interpret the history of manufacturing for the public.

by Philip W. Bishop
Philip W. Bishop was a writer and museum historian whose books focused on the history of industry, especially steel and petroleum. Project Gutenberg lists The Beginnings of Cheap Steel, and the text identifies him as a curator of arts and manufactures at the Smithsonian Institution's United States National Museum.
Smithsonian records also show him serving at the Museum of History and Technology, later the National Museum of American History, where he was a curator in the Division of Manufacturing and was honored at a retirement reception. That museum background helps explain the direct, explanatory style of his writing: he wrote to make complex industrial history understandable.
I could confirm his professional role and published work, but I did not find a reliable source in this search that clearly confirmed the details of his death beyond your note that he died in 1991.