Abraham Lincoln carried in his pocket a spiritual book of days, titled A Believer's Daily Treasure, which was originally published in the mid-1800s by the Religious Tract Society of London, England. There is speculation that the devotional may have been given to Lincoln by his wife Mary. Applewood's 2015 edition of the book includes an introduction by Carl Sandburg, which was first published in a 1957 edition. Said Sandburg, "... it is new testimony that he was a man of profound faith."
Features a verse of scripture and a corresponding verse of poetry. The poetry is often beautiful! Takes about 30 seconds to read the day's entry. Cool to think Lincoln read the same material, some 9 score years ago. I'm sure I'll use again in a few years.
Each month has a theme (such as "Privileges of the Believer", "Joys of the Believer", and "Temptations of the Believer"), with a single, appropriate verse of Scripture and poem for each day of the year. Perfect for either the breakfast table or nightstand to begin or end your day with an inspirational thought.
I remember reading Carl Sandburg's introduction to this book while in college. He ends with a quote by Lincoln on reading the Bible. "Take all this book upon reason that you can, and the balance on faith, and you will live and die a better man."
This devotional includes a great introduction by Carl Sandburg, followed by black and white photographs of Lincoln's actual devotional, called The Believer's Daily Treasure. This is a fairly short book. The entries for each calender day through the year include a short verse of scripture followed by a brief poem.