Common roots - separate branches :  railway history and preservation  proceedings of an international symposium held at the National Railway Museum, York from 8 to 12 October 1993 / 
edited by Rob Shorland-Ball 
 - London :  Science Museum,  1994 
 - 236 p. :  ill. ;  25 cm. 
<br/><br/><label>ISBN: </label>0901805777  RM138.82 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Railroads--History--Congresses<br/>Railroads--Preservation--Congresses<br/>Railroad engineering