In the book's own words, not ours, with obvious scanning errors fixed. Families often supplied these stories to the publisher, so check key dates.
From The biographical record of Jasper County, Missouri (1901)
STEPHEN A. SMITH.
Iowa, a progressive state, has given to Missouri, another progressive state, some of its most progressive citizens. One Iowan who has achieved success in Missouri is Stephen A. Smith, of Joplin, Jasper county. Mr. Smith is a native of Mills county, Iowa, a son of Chauncey and Caroline (Hopper) Smith. His father, who was born in Massachusetts, came to Joplin from Iowa in 1876 and died in 1892, at the age of sixty-six years. His mother, who was a native of Pennsylvania, is living at Joplin, aged sixty-nine years.
[This passage is too damaged in the scanned book to reproduce. See the original book.]
As printed in The biographical record of Jasper County, Missouri (1901). See the original pages. Wording is the original; obvious scanning errors have been corrected, and a few may remain.
The printed record stops around 1901. We trace your line from there down to you, with every source cited.