| title | ISBN-13 | year of publication |
|---|---|---|
| Open-Air Schools: -1910 | 978-1-112-25058-3 | 2009 |
| Open-Air Schools: -1910 | 978-1-112-25059-0 | 2009 |
| Open-Air Schools | 978-1-141-53990-1 | 2010 |
| The Cleveland School Survey; Summary Volume | 978-1-290-54474-0 | 2012 |
| The Prospects for Building Construction in American Cities: -1922 | 978-1-112-27678-1 | 2009 |
| The Public Schools of Springfield, Illinois: Educational Section of the Springfield Survey Conducted Under the Direction of Leonard P. Ayres, PH. D. | 978-1-112-49631-8 | 2009 |
| The War with Germany: A Statistical Summary | 978-1-146-45564-0 | 2010 |
L a · L. Ayres · L.P. · L. Porter · Leonard A. · P. A.
Cornell University Library · HardPress Publishing · Nabu Press