vintage religious tract "Warning" regarding proper observance of Sabbath

Description

Here is a vintage
undated religious tract entitled "Warning" regarding the proper observance of the Sabbath.  The cover shows a picture of the author - Rick d. Newton.  The pamphlet measures about 4 3/4 X 3 1/4 inches and it has 16 pages.  The back shows it was published by the American Sabbath Union.  The pamphlet has some light wear around the edges.
Please see the pictures and ask any questions.
Thank you for looking.
(Inv 24,745)