Correspondence primarily between members of the Sommer family and Wilhelm and Helga Höpken. Wilhelm and Helga Höpken are Gisela Sommer’s brother and sister-in-law. Of special interest is a programme for an exhibit presented by the University of Guelph from January 12, 2001 to March 17, 2001 titled, The John & Gisela Sommer Collection: 40 years of collections at Gallery House Sol. The exhibit featured 111 items, mostly books and prints, collected by Ulrich and Gisela Sommer for their art gallery, Gallery House Sol. All of the items featured in the exhibit were subsequently donated to the University of Guelph. Records include letters, greeting cards, post cards, a programme, press clippings and, photographs of family members, friends, plants, art, and animals.