Stephen Myers (Not only for his permission to use extracts from his book, but also for his dedication to Sheffield's motoring heritage) 

John Stringer (Nephew of the founder)

Chris Cummings (Great Grandson of the founder)

Sheffield City Libraries

The National Motor Museum Trust, Beaulieu

Ernie Crust (Motoring enthusiast and historian from the North East who helped with background about racing at Saltburn)

Mike Worthington-Williams (Motoring expert, historian and author)

Kelham Island Museum, Sheffield

National Motorcycle Museum

Grace's Guide to Engineering

Site owned by Andrew Walker (Great Great Nephew of the founder)

Material Copyright © 2011 The Stringer Family and descendants