(en) William T. Davies, The New England States, their Constitutional, Judicial, Educational, Commercial, Professional, and Industrial History, Boston, D.H. Hurd & Co, , Volume I éd., 414–418 p. (lire en ligne).
« The most famous of the rear-drive safeties introduced in 1885 was the Rover, produced in Coventry by John Kemp Starley. »
cyclepublishing.com
(en) Frank J. Berto et al., The Dancing Chain : History and Development of the Derailleur Bicycle, San Francisco, Cycle Publishing/Van der Plas Publications, , 5e éd. (1re éd. 2000), 400 p. (ISBN978-1-892495-77-8, lire en ligne).
(en) Ben Bolder, « The Bicycle Industry (from Scientific American) », The Farmer's Vindicator, Valley Falls, Kansas, , p. 3 (lire en ligne, consulté le ).
oldbike.wordpress.com
(en) « Bicycle History: Birmingham », Online Vintage Bicycle Museum (consulté le ) : « A better idea of the B.S.A. Safety can be seen … 32-inch driving wheel … 20-inch steer ».
(en) Frank J. Berto, Ron Shepherd et al., The Dancing Chain : History and Development of the Derailleur Bicycle, San Francisco, Cycle Publishing/Van der Plas Publications, , 3e éd. (1re éd. 2000), 400 p. (ISBN978-1-892495-59-4, lire en ligne).
