Rittenhouse, D. (1775). The universal almanack, for the year of our Lord 1776 ...: The ingenious D. Rittenhouse, A.M. has again favour'd us with the calculations. Philadelphia: Printed & sold by James Humphreys, Jr., in Front-street, at the corner of Black-horse Alley.

Rittenhouse, David. The Universal Almanack, for the Year of Our Lord 1776 ...: The Ingenious D. Rittenhouse, A.M. Has Again Favour'd Us With the Calculations. Philadelphia: Printed & sold by James Humphreys, Jr., in Front-street, at the corner of Black-horse Alley, 1775.

Rittenhouse, David. The Universal Almanack, for the Year of Our Lord 1776 ...: The Ingenious D. Rittenhouse, A.M. Has Again Favour'd Us With the Calculations. Philadelphia: Printed & sold by James Humphreys, Jr., in Front-street, at the corner of Black-horse Alley, 1775.