William Edwards Henderson, William McPherson
Michael Faraday, William Crookes
Francis C. (Francis Cowles) Frary
Basilius Valentinus, Daniel Cable
Edward J. Neth, Paul Flowers, Klaus Theopold, Richard Langley, William R. PhD Robinson, OpenStax
Paul Flowers, Klaus Theopold, Richard Langley, William R. PhD Robinson, OpenStax