Langworthy, I. P. 1. (1866). A historical discourse, delivered at Chelsea, Mass., Sept. 20, 1866, at the twenty-fifth anniversary of the Winnisimmet Congregational Church. Chelsea: [J.A. Butler, printer].

Langworthy, Isaac P. 1806-1888. A Historical Discourse, Delivered At Chelsea, Mass., Sept. 20, 1866, At the Twenty-fifth Anniversary of the Winnisimmet Congregational Church. Chelsea: [J.A. Butler, printer], 1866.

Langworthy, Isaac P. 1806-1888. A Historical Discourse, Delivered At Chelsea, Mass., Sept. 20, 1866, At the Twenty-fifth Anniversary of the Winnisimmet Congregational Church. Chelsea: [J.A. Butler, printer], 1866.