1 2 Maelzel's patent of the Metronome The Repertory of patent inventions: and other discoveries and improvements in arts, manufactures, and agriculture... published by T. and G. Underwood, 1818 (alternative)
↑ Lynn Townsend White, Jr. (Spring, 1961). "Eilmer of Malmesbury, an Eleventh Century Aviator: A Case Study of Technological Innovation, Its Context and Tradition", Technology and Culture 2 (2), p. 97–111 [100]: "Ibn Firnas was a polymath: a physician, a rather bad poet, the first to make glass from stones (quartz), a student of music, and inventor of some sort of metronome."
