The Motor Cycle and Motor Cycling: Some 1500 issues dating back to the 1920s. A partial listing here
Tragatsch: The Illustrated Encyclopaedia of Motorcycles Tragatsch
Peter Henshaw: Encyclopedia of the Motorcycle
Works by Bob Currie, Roy Bacon and Ken Hallworth
Bruce Main-Smith: numerous publications
Fanatical Fay Taylour: Her sporting & political life at speed, 1904-1983. Dr Stephen M. Cullen.(PDF)
Fay on Four Wheels Richard Armstrong, 2016
Fay Taylour: Queen of Speedway by Brian Belton. Panther Publishing Ltd ISBN: 9780954791247AJS of Wolverhampton, S.J. Mills. ISBN 0-9523338-0-5
Raleigh and the British Bicycle Industry by Roger Lloyd-Jones and M. J. Lewis
The works of Dr. George Cohen, aka Norton George.
A-Z des Motos Belges by Egon Duchateau, Geert Huylebroeck, Nick Jonckheere and Rik Van Eycken. ISBN 9789077346105
More information at oldtimerworld.be
Historia del Motociclismo Argentino Juan Von Martin
Italian
Dizionario tecnico marolli italiano-inglese, Le Monnier, Firenze, 10th Edition, pp2045
Mario Columbo: Moto Guzzi, Milani 1977
Cento anni di moto 1886-1986 M. Clarke, 1986 Milano
Moto Italiane - I Primi 50 Anni, Vols 1, 2, 3. Pluricilindriche by Stefano Milani
Le motociclette MV Agusta Campioni del Mondo Restelli E. 2002 San Giuliano Milanese
Edoardo Bianchi Gentile A. 1992 Milano
La motocicletta italiana - un secolo su due ruote tra storia, arte e sport 2005 Milano
Motociclismo a Trieste - Cent'anni di storia nella provincia giuliana, Franco Damiani di Vergada, 2007, ISBN 978-88-8190-224-8 .
Moto Gilera Pignacca B. 1983 Milano
Innocenti Lambretta Tessera V. 1996 Vimodrone
Moto G.D. - L' Aquila a due tempi by Enrico Ruffini. ISBN: 88-7911-042-X
Moto Guzzi - il sogno italiano 2004 Roma
Ganna: il campione, le gare, le motociclette - by Ernesto Restelli.
Scooters du monde, 100 ans d'histoire, by François-Marie Dumas and Didier Ganneau. ISBN-10: 2851204777
French
La Motocyclette en France. Bourdache. Four volumes, 1894-1924, 1945-1970
Claude Reynaud Le Grand Dictionnaire des Motos Françaises, and works covering Terrot, Peugeot and others.
Motos Française 1869/1962 - Patrick NEGRO
Les Motos Françaises - Cent ans d'Histoire - Bernard Salvat
Dictionnaire illustré des 600 marques motocyclistes de Paris et de la Seine by Bernard Salvat
Dictionnaire des motos françaises by Dominique Pascal. ISBN-13: 978-2707201348, 127 pages
Gnome-Rhône - L'Histoire des Motocyclettes - Daniel David
Monet-Goyon - La Moto Française - Michel Gagnaire/Franck Meneret
Monet-Goyon - Des origines 1939 - Jean Goyard
Motobécane et Motoconfort - Souvenir d'un Ingénieur - Eric Jaulmes
Les Motocyclettes Henri Dresch - François-Henri Denise
Robert Sexe - Reporter Motocycliste Photographe 1890/1986 - J-P Schuls
Le Vélosolex de mon Père - Franck Meneret/Jean Goyard
Le Vélosolex , la bicyclette qui roule toute seule - Salvat/Pascal/Goyard
Nougier 1932-1972, Le rêve français by François-Marie Dumas Moto-Guzzi - L'Histoire - 1921/1993, Voxan - La Naissance d'un Mythe and others - Christian Guislain
50 ans de Motocyclettes Française, and several other works - Dominique Pascal
Czech
L&K - Skoda: Part 1-The Upward Path 1895-1945
Kozisek, Petr & Jan Kralik
Telling the definitive story of Skoda from its beginnings as Laurin & Klement, bicycle manufacturers, to its takeover by the Nazis in 1939 and continuing the story up to the end of the war. Over 200 pages of text and over 200 of photographs and specifications of their motorcycles, cars and commercial vehicles up to 1945. This volume weighs nearly 2 kg.
Skoda Laurin & Klement (ISBN: 1855322374)
Ivan Margolius~Charles Meisl
Osprey, 1992
Other references
Tom Cotter: The Vincent in the Barn
L.S. Skartsis, "Greek Vehicle & Machine Manufacturers 1800 to present: A Pictorial History", Marathon (2012) ISBN 978-960-93-4452-4
Suspension Systems Britten Archive