| American Swedish Historical Foundation | Yearbook 1968. The Royal Warship Vasa, Lost in 1628, Recovered in 1961. "8 Forskjutne Skillingar". |
| American Swedish Historical Foundation | Yearbook 1969-70. Thoughts of a Recent Immigrant. Notes on the Swedish Bible of 1674 and its Publisher. Margret Mattson, Accused Witch. The John Ericsson Collection of the American Swedish Historical Foundation. New Sweden and Finland. |