Wikipedia articles incorporating a citation from Appleton's Cyclopedia

Frederick Leypoldt (born Jakob Friedrich Ferdinand Leupold; 17 November 1835 – 31 March 1884) was a German-American bibliographer, the founder of Library Journal, Publishers Weekly, Index Medicus and other publications.

Charles Albert Fechter (23 October 1824 – 5 August 1879) was an Anglo-French actor.

Charles Blondin (born Jean François Gravelet, 28 February 1824 – 22 February 1897) was a French tightrope walker and acrobat. He toured the United States and was known for crossing the 1,100 ft (340 m) Niagara Gorge on a tightrope.
During an event in Dublin in 1860, the rope on which he was walking broke and two workers were killed, although Blondin was not injured.
He married three times and had eight children. His name became synonymous with tightrope walking.

Charles Beck or Karl Beck (August 19, 1798 – March 19, 1866) was a German-born American classical scholar, Harvard professor and friend of Charles Follen.

Heinrich Engelhard Steinweg, anglicized name Henry Engelhard Steinway, (February 22, 1797 – February 7, 1871) was a German-American piano maker who made pianos in both Germany and the United States. He was the founder of the piano company Steinway & Sons.