The photo displays two men pollinating an apple tree, probably in an orchard near Sprenger’s house on the Haarweg in Wageningen. The text with the photo states: Lab for horticultural plant cultivation, May 1935.

The photo album belonged to the former Sprenger Institute, Haagsteeg 6, where later the Horticultural Plant Cultivation department was located. The photo album was donated to Special Collections by A.M. Sprenger’s granddaughter.