HarperCollins Publishers · Vertical Editions
| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| 1-Minute Crosswords: 250 Puzzles for Everyone | 978-1-4434-5679-1 (1-4434-5679-9) | 2018 | Dan Liebman |
| The Last Fancy Dan: The Duncan McKenzie Story | 978-1-904091-36-3 (1-904091-36-9) | 2009 | David Saffer |
| Ultimate 1-Minute Crosswords: 250 Puzzles for Everyone | 978-1-4434-5680-7 (1-4434-5680-2) | 2018 | Dan Liebman |