This collections contains research files related to Heinrich Bergen's work on Kronsgarten and Einlage. The files related to the village of Kronsgarten include files on the Kronsweide Mennonite Church and the villages of Wiesenfeld and Prijut, which had original settlers from Kronsgarten. There is extensive correspondence (some original and copy copied) between Henry Rempel (Montreal), Johann Klassen (Germany) and Jakob Bergen (Saskatchewan). Writers of articles and longer pieces on Kronsgarten or Kronsweide include Isaac P. Klassen (Winnipeg)and Hans Rempel (Virgil)
The Einlage accumulation of materials also has some correspondence, articles, clippings and longer writings. It includes the recollections of Abram A. Martens (1900-1979), who wrote about his memories covering 1907-1927, in German and English. Other writers include Wera Teichroeb, Catharina Martens-Berg and Isaac Reimer.
The photographs in the collection include an 1973 Reunon photo of former residents of Kronsgarten, Wiesenfeld and Prijut. There are also a few historic photos of Kitchkas (formerly called Einlage) such as the construction of the bridge across the Dnieper River and also a view of the hydro electric development project on the river. Eleven photos were taken by a group of Canadian tourist who went to visit the village of Prijut, Ukraine in 2000.