Garden AdministrationProvide guidance to management on matters related to the garden David Anderson Founding Family Member John Gleason Chief Operating Officer 815.316-3286 | Email NICK ESTHUS Garden Grounds & Facilities Manager Susan Joseph Bookkeeper & Office Manager 815.316.3350 | Email Stephanie Zibell Admissions & Gift Shop Manager 815.229-9390 | Email Catherine Marsh Development Assistant & Horticulturalist 815.316.3308 | Email JOANN PETERSON Group Tour & Docent Manager 815.316.3354 | Email Warren Franklin Weddings & Events Manager 815.316.3285 | Email