For your consideration, here is an instruction manual for the Singer Slant-O-Matic Sewing Machine, model 503, dated 1961, 96 pages. It measures 5 by 7 inches.

It has some wear on the covers and there are some light stain marks on the front cover. Item pictured is the actual item up for sale and comes from a non-smoking household. (29.836c-.8hc)