Vintage oil & gas advertising for ENCO and Humble Oil. Featuring a Happy Motoring traveling coloring book printed and published by the General Drafting Company of Convent Station, New Jersey. These coloring books were distributed in 1963 by your local ENCO and Humble gasoline service stations. They feature landmark places from around the United States. There are 24 pages of fun filled coloring and education inside this vintage advertising piece. The coloring book measures 8 ½” wide and 10 ¾” high. Condition is good with no missing pages, no page tears or creases. There are some light water marks on the front and back covers as well as some of the pages. There is also a first name written in ink on the front cover. Binding is tight.