William Newton Hartshorn (October 28, 1843 – September 1920) was a Baptist leader from the United States who travelled the world and became a millionaire advocating Sunday school and leading the "Sabbath army". He was born in Greenville, New Hampshire.[1] He lived in Boston.[2] He led a large tour and convention through Palestine and published an account of the journey with Louis Klopsch.[3] He was an executive officer at the Priscilla Publishing Company in Boston.[3]
He had a summer home at Clifton on the North Shore of Massachusetts known as "Dike Rock".[3]
In 1898 and 1899 he was issuing a publication called Household.[4]
He published a book about "progress and promise" among African Americans from the Civil War era to 1910.[5]