He was a recognized philanthropist and donated time and finances towards the betterment of youth, the furthering of the arts, and the study of agricultural sciences.

In 1904, he acquired the Woronoco Paper Co. (then known as a "cursed" mill) in Westfield, Massachusetts, and operated it as a stand-alone company, meanwhile developing the surrounding village into a factory town with a notably high standard of living.

Between 1925 and 1927, In 1984, Moses was featured on a 20 cent U.S. stamp honoring him as the founder of Junior Achievement,[3] although several First day of issue prints incorrectly list his date of birth as 1862.

The family, along with numerous summer staff, raised prized apples, steer, and award-winning hunting dogs on the property.

Today, many structures original to Moses still stand, including his weekend home, known locally as The Manor House (and formerly as "Memorial Lodge").

A member of the National Committee on Boys and Girls Club Work from 1925-1945, he also funded the Horace A. Moses Building at the Eastern States Exposition and sponsored the International 4-H Leader Training School in Springfield, Massachusetts.

Not much is known about Moses outside of his business and philanthropic interests, except that he was a devoted religious man and member of the Trinity United Methodist Church in Springfield, MA.

The Fifteenth Census of the United States taken in 1930 shows Horace A. Moses living with his wife Alice E. in the sixth ward of Springfield, Massachusetts, in what is today the Forest Park neighborhood,[6] along with a maid and a chef (both live-in).

[8] Following her husband's death in 1947, Alice Moses lived full-time at Woronoake Heights, while continuing to slowly sell off the property around her to the Boy Scouts.