Foulke, J. (1836). Friends' almanac for the year 1837: ... an account of the time of holding the yearly, quarterly, monthly, and particular meetings of Friends, on the continent of America. Astronomical calculations for the latitude and meridian of Philadelphia ... Philadelphia: Published by Elija Weaver, John Richards, printer.

Foulke, Joseph. Friends' Almanac for the Year 1837: ... an Account of the Time of Holding the Yearly, Quarterly, Monthly, and Particular Meetings of Friends, On the Continent of America. Astronomical Calculations for the Latitude and Meridian of Philadelphia ... Philadelphia: Published by Elija Weaver, John Richards, printer, 1836.

Foulke, Joseph. Friends' Almanac for the Year 1837: ... an Account of the Time of Holding the Yearly, Quarterly, Monthly, and Particular Meetings of Friends, On the Continent of America. Astronomical Calculations for the Latitude and Meridian of Philadelphia ... Philadelphia: Published by Elija Weaver, John Richards, printer, 1836.