Guide to the Modern Records Centre, University of Warwick Library Storey Richard Heftet / 1977 / Engelsk
Osborne Case Papers and Other Records of the Amalgamated Society of Railway Servants Woodland Christine Heftet / 1979 / Engelsk
Postman's Round, 1858-61 Selected Abstracts from the Diary of Edward Harvey Harvey Edward Heftet / 1982 / Engelsk
