Downes, J. (1842). The United States' almanac; or complete ephemeris, for the year 1843: Wherein the sun's rising, setting, &c. are given for six different parallels of latitude, embracing the whole extent of the Union; ... a complete census of the United States,. Philadelphia: published by E. H. Butler.

Downes, John. The United States' Almanac; or Complete Ephemeris, for the Year 1843: Wherein the Sun's Rising, Setting, &c. Are Given for Six Different Parallels of Latitude, Embracing the Whole Extent of the Union; ... a Complete Census of the United States,. Philadelphia: published by E. H. Butler, 1842.

Downes, John. The United States' Almanac; or Complete Ephemeris, for the Year 1843: Wherein the Sun's Rising, Setting, &c. Are Given for Six Different Parallels of Latitude, Embracing the Whole Extent of the Union; ... a Complete Census of the United States,. Philadelphia: published by E. H. Butler, 1842.