This work was published in the US without copyright notice
at a time when such notice was required to secure copyright.
It therefore passed into the public domain upon initial publication.
This digital reprint remains in the public domain.
In 1959, the Ludlow Typograph Company ran a contest at their booth at the Graphic Arts Exposition (repeating a similar contest of 1939) pitting Ludlow slugline composition against hand typesetting. The Ludlow won, of course. This booklet gives the results.