title | ISBN-13 | year of publication |
---|---|---|
Collecting Early Machine-Made Marbles: The M. F. Christensen & Son Company and Christensen Agate Company | 978-0-7643-1827-6 | 2003 |
Marble Collectors Handbook | 978-0-7643-2331-7 | 2005 |
Marbles: Identification and Price Guide | 978-0-7643-1574-9 | 2002 |
Marbles Illustrated | 978-0-7643-0970-0 | 1999 |
Pictorial Price Guide of Marbles | 978-0-7643-1633-3 | 2007 |
R. B · R Block · R. S. · Robert B. · Robert Block · Robert S. · S. B · S. Block