| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| Worcester, 1880-1920 | 978-0-7385-1210-5 (0-7385-1210-9) | 2003 | William O. Hultgren · Eric J. Salomonsson |
| Worcester | 978-0-7385-3864-8 (0-7385-3864-7) | 2005 | William O Hultgren · Eric J. Salomonsson |