Blanck, D. David W. Olson’s <i>Vikings Across the Sea. Emigration and the Building of a Greater Norweay, 1860-1945</i> and Orm Øverland’s (editor and Translator) <i>From America to Norway. Norwegian- American Immigrant Letters 1838-1914</I>. Volume One, 1838-1870. asca 2013, 45, 171-173.