Family tree Helmantel » Sources » "Amsterdamse Emigranten, onbekende brieven uit de prairie van Iowa" door dr. J. Stellingwerff; Stadsarchief Amsterdam; " Iowa letters: Dutch immigrants on the American frontier" van Johannes Stellingwerff en Robert P. Swierenga
Source description
"Amsterdamse Emigranten, onbekende brieven uit de prairie van Iowa" door dr. J. Stellingwerff; Stadsarchief Amsterdam; " Iowa letters: Dutch immigrants on the American frontier" van Johannes Stellingwerff en Robert P. Swierenga
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