The Harold A. Iddles Lecture Series was established as an annual event of the Chemistry Department upon Professor Iddles' retirement in 1961. Chemistry alumni and friends established this fund to support a lecture series which includes one technical presentation and a second presentation of broader interest for the general public. This alumni gesture has served as a continuing recognition of Professor Iddles' service to the department as its head from 1929 to 1961, and of the educational and research programs he fostered. Dr. Iddles, educated at Michigan State College (B.S., 1918) and State University of Iowa (M.S., 1922), received the Ph.D. in Chemistry from Columbia University in 1925 and then studied in Austria, Germany and England. During his long tenure at New Hampshire, he was widely recognized as an outstanding teacher and tireless advisor to students. For over thirty years some of the most distinguished chemists in the world have visited the University of New Hampshire as Iddles Lecturers.
Past Iddles Lecturers
| Rob Corn | Dietmar Seyferth | Isiah M. Warner |
| Erin E. Carlson | George M. Whitesides | David Parker |
| Arthur C. Cope | Clayton H. Heathcock | F. Sherwood Rowland |
| Louis F. Feiser | Paul C. Lauterbur | Peter Wipf |
| Frederick E. Brinckman | Allen J. Bard | R. Mark Wightman |
| James P. Collman | Mark S. Wrighton | Thomas V. O'Halloran |
| William N. Lipscomb, Jr. | Anders Kjaer | John LaMattina |
| Kenneth B. Wiberg | Rudolph A. Marcus | Pamela Bjorkman |
| George C. Pimentel | Vincent du Vigneaud | Mary J. Wirth |
| Kurt Mislow | Roand C.D. Breslow | Barbara J. Finlayson-Pitts |
| R. Bruce Merrifield | Daryle J. Busch | Fred Wudl |
| Sidney H. Fox | Manfred Eigen | Raoul Kopelman |
| Francis O. Schmitt | John D. Roberts | Kim D. Janda |
| Philip Aisen | Gabor A. Somorjai | Marsha I. Lester |
| Jerrold Meinwald | Ira W. Levin | William B. Tolman |
| George S. Hammond | F. Albert Cotton | Weihong Tan |
| Garry A. Rechnitz | John T. Yates, Jr. | Timothy M. Swager |
| Walter M. Stockmayer | John E. McMurry | Mark Ratner |
| R.M. Acheson | Paul S. Anderson | Peter Mahaffy |
| Louis P. Hammett | Richard P. Wayne | Cynthia Friend |
| Paul G. Gassman | Chris Enke | Jacqueline V. Barton |
| Orville L. Chapman | Andrew D. Hamilton | Michael J. Welch |
| Royce W. Murray | Debbie C. Crans |