1. The Leeward Islands almanack : with which is incorporated the Dominica almanack, 1879 / compiled by Alexander Rumsey Lockhart, editor of "The Dominican." Format: Book Language: English Published: [1878]
2. The Maine register and United States' calendar, for the year of our Lord 1820 ... [electronic resource] : containing civil, judicial, ecclesiastical and military lists... Format: Book Language: English Published: [1820]
3. Americanischer Stadt und Land Calender auf das 1820te Jahr Christi ... [electronic resource] Format: Book Language: German Published: [1819]
4. An Agricultural and economical almanac, for the year of our Lord 1820 ... [electronic resource] : Calculated for the meridian of New-Haven, lat. 41° 18' N. long. 72°... Format: Book Language: English Published: [1819]
5. An Astronomical diary, or almanack, for the year of our Lord, 1820 ... [electronic resource] : Adapted to the horizon and meridian of Connecticut. ... / Astronomical... Format: Book Language: English Published: [1819?]
6. An astronomical diary, or almanack, for the year of our Lord, 1820 ... [electronic resource] : Adapted to the horizon and meridian of Norwalk, Fairfield County, Connecticut... Author: Sanford, Joel, -1842? Format: Book Language: English Published: [1819]
7. An astronomical diary, or almanack, for the year of our Lord and Saviour 1820 ... [electronic resource] : Calculated for the meridian of Andover, (Mass.) ... but will serve... Author: Spofford, Thomas, 1795- Format: Book Language: English Published: [1819]
8. Bailey's Rittenhouse almanac, for the year of our Lord, 1820. ... [electronic resource] / Calculated by Joshua Sharp. ; [Six lines from Jefferson] Format: Book Language: English Published: [1819]
9. Beers' almanac, for the year of our Lord 1820 ... [electronic resource] / Calculated for the horizon and meridian or Bridgeport, latitude 41 degrees, 11 minutes North,... Format: Book Language: English Published: [1819?]
10. Beers' almanac for the year of our Lord 1820. ... [electronic resource] / Calculated for the meridian of Hartford, latitude, 41° 45' N.--longitude 72° 50' W.... Format: Book Language: English Published: [1819]