Keller, James, 1900-1977. A day at a time; : a Christopher thought for each day of the year. [electronic resource] . — Garden City, N.Y., : Hanover House,, 1957.. — 365 p. 20 cm. LCCN: 57013078 Subjects--Topical Terms: Devotional calendars. LC Class. No.: BV4832 / .K426