Olli, C., Olli, J. B., & Ekman, K. (1976). A History of Finnish American organizations in Greater New York, 1891-1976: A project of the Greater New York Finnish Bicentennial Planning Committee, inc. [New York?]: The Greater New York Finnish Bicentennial Planning Committee.

Olli, Corinne., John B. Olli, and Katri Ekman. A History of Finnish American Organizations in Greater New York, 1891-1976: A Project of the Greater New York Finnish Bicentennial Planning Committee, Inc. [New York?]: The Greater New York Finnish Bicentennial Planning Committee, 1976.

Olli, Corinne., John B. Olli, and Katri Ekman. A History of Finnish American Organizations in Greater New York, 1891-1976: A Project of the Greater New York Finnish Bicentennial Planning Committee, Inc. [New York?]: The Greater New York Finnish Bicentennial Planning Committee, 1976.