Walter Montgomery Jackson

Walter Montgomery Jackson (1863–1923) was the founder of encyclopedia publisher Grolier, Inc., and he was the partner of Horace Everett Hooper in publishing the 10th edition of the Encyclopædia Britannica and in developing its 11th edition. He split with Hooper in 1908–1909 in a nasty legal fight after failing to wrest control of the Britannica from Hooper, but obtaining the right to publish the Book of Knowledge, a 1912 U.S. adaptation of The Children's Encyclopædia.