Björkbom, C., & Johnson, A. (1938). New Sweden historical exhibit, 1638-1938: Official catalog, June-July, nineteen hundred thirty-eight. [Philadelphia and New York]: [Aquatone Presses of E. Stern & Co.].

Björkbom, Carl, and Amandus Johnson. New Sweden Historical Exhibit, 1638-1938: Official Catalog, June-July, Nineteen Hundred Thirty-eight. [Philadelphia and New York]: [Aquatone Presses of E. Stern & Co.], 1938.

Björkbom, Carl, and Amandus Johnson. New Sweden Historical Exhibit, 1638-1938: Official Catalog, June-July, Nineteen Hundred Thirty-eight. [Philadelphia and New York]: [Aquatone Presses of E. Stern & Co.], 1938.