http://stevenestrella.com/composers/composerfiles/cramer1858.html Biographical data, recommended CDs, books and sheet music, bibliography, and link to biographical essay. http://www.uk-piano.org/history/cramer/ Focus on his time in England, especially as a music publicist and a piano maker. http://www.karadar.net/Dictionary/cramer.html Biography, photograph, noted works, and links to related composers from Karadar.