| title | ISBN-13 | year of publication |
|---|---|---|
| Education Through Play | 978-1-4590-7087-5 | 2009 |
| Play and Recreation for the Open Country: -1914 | 978-1-112-27512-8 | 2009 |
| Play and Recreation for the Open Country: -1914 | 978-1-112-27513-5 | 2009 |
| Play and Recreation for the Open Country | 978-1-141-85452-3 | 2010 |
| The Play Movement and Its Significance | 978-1-142-56813-9 | 2010 |
| The Play Movement and Its Significance | 978-1-112-02643-0 | 2009 |
H. C. · H. Curtis · H.S. · Henry-C · S.C.
Cambridge Scholars Publishing · Cornell University Library · Nabu Press