Nearly all the astronomical notes on the calendar pages, and the times of the moon's rising and setting, are identical with those in the Pennsylvania, Delaware, Maryland and Virginia almanack for 1791 (Baltimore), probably by Benjamin Workman, who calculated the rest of the later issues in that series. The other calculations vary slightly for the most part, reflecting the difference in meridian between Baltimore and Philadelphia. Workman appears to have calculated all of Bailey's pocket almanacs through this year.

Electronic text and image data. [Chester, Vt. : Readex, a division of Newsbank, Inc., 2002-2004. Includes files in TIFF, GIF and PDF formats with inclusion of keyword searchable text. (Early American imprints. First series ; no. 45817).

Bristol, R.P. Supplement to Charles Evans' American bibliography, B7306

Shipton, C.K. National index of American imprints through 1800, 45817

Drake, M. Almanacs of the United States, 10276

Pennsylvania > Registers.

Philadelphia (Pa.) > Registers.

United States Pennsylvania Philadelphia.