author
1870–1941
Best known as a co-author of a major early biography of Thomas Edison, he wrote from unusually close range as a lawyer and senior figure within Edison’s world. His work offers readers a firsthand window into the culture of invention in the early electrical age.

by Frank Lewis Dyer, Thomas Commerford Martin
Frank Lewis Dyer (1870–1941) is remembered chiefly for co-writing Edison: His Life and Inventions with Thomas Commerford Martin, first published in 1910. Library and public-domain catalog records consistently identify him as the book’s author and date him as 1870–1941.
The book itself presents him as "General Counsel for the Edison Laboratory and Allied Interests," which helps explain its distinctive point of view. Rather than writing as a distant biographer, Dyer wrote from inside Edison’s orbit, with direct access to the people, projects, and business world surrounding one of America’s most famous inventors.
For today’s listeners, Dyer is most interesting as a close contemporary witness. His writing is valuable not only for what it says about Edison, but also for how it captures the optimism, ambition, and industrial scale of the early twentieth century.