Thompson, Zadock 1796-1856 The Canadian Farmers' Almanac for the Year of Our Lord 1840 [microform]: Being Bissextile or Leap Year, Calculated for the Town of Sherbrooke in ... 50' W. From the Royal Observatory, Greenwich

Thompson, Zadock 1796-1856 The Canadian Farmers' Almanac for the Year of Our Lord 1838 [microform]: Being Second After Bissextile or Leap Year, Calculated for the Meridian of ... W. From the Roal [sic] Observatory, Greenwich