Bookkeeper JNL is based on the lighter weight version of R. Hunter Middleton’s ‘Karnak’, produced in 1936 for Ludlow.
“Karnak” itself was based on the geometric slab-serif “Memphis”, designed in 1929 by Dr. Rudolf Wolf and released originally by the Stempel Type Foundry of Germany.
According to Wikipedia, “Karnak” "was named after the Karnak Temple Complex in Egypt, in reference to the fact that early slab serifs were often called “Egyptians” as an exoticism by nineteenth-century type founders."
Available in both regular and oblique versions, Bookkeeper JNL serves well as both a headline and text type face.