Sonia Wasco
President, CEO

Sonia holds a Master's degree from Penn State University's Agricultural Science program and an B. S. from Delaware Valley College of Science and Agriculture. Sonia has been with the company since 1986 and has served as Preisdent and CEO since 1995. Prior to joining Grant Heilman Photography, Sonia was an award winning Agriculture teacher at Warwick High School, the school district in which our office is located. Sonia has been an active volunteer in the local and state agricultural community for more than 25 years. Her extreme interest in the conservation of the agricultural heritage of Lancaster County has earned her an appointment by our County Commissioners as a member of the Board of Directors of the Lancaster County Conservation District. Sonia is a Past-President of the Picture Archive Council of America, the trade assoication for image providers in the United States. She and her husband, Frank, are active outdoors people and live in Leola, along with their three purebred Black Labrador Retreivers.

Josh Slaymaker
Photo Researcher/ Photographer


Josh graduated from Kutztown University with a Bachelor's degree in Organismal Biology and Ecology. He has been with Grant Heilman Photography since 2007. Included in his everyday activities are researching client requests, general biological research, as well as photographing subjects requested by clients. Josh enjoys the outdoors including rock climbing, hiking and kayaking. He lives in Landisville with his wife Hilary and their boxer Charlie.


Support Staff
Grant Heilman Photography, Inc has a great support staff consisting of part time and temporary employees. These individuals greatly influence the daily operations at the office.

Alec Fassnacht

Kelby Mansi

Whitney Mendoza

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