He is listed as Henry in the marriage record.
[Marriage] Longmont Ledger (Longmont, Boulder County) - 24 Nov 1899, Page 2
TALLMAN-BUTLER--At the home of the bride's parents, Sunday, Nov 19, 1899, by Rev. C. N. Wester, Harry Tallman and Miss Nellie Butler, both of Longmont.
A few friends and relatives were present to witness the ceremony that bound these two young people together for life. The bride was born in Longmont, the daughter of Mr. and James Butler, and grew up a very attractive young lady; graduating from the Longmont High School in 1894. She was a home girl and a loving companion for her mother. If she makes as good a wife as she has a daughter, Mr. Tallman is greatly to be congratulated.
The groom has lived in Longmont for some years and is a quiet, industrious young man.
Mr. James Butler, the father of the bride, some time ago gave them the corner lot near his own house, on which Mr. Tallman has built a house, where they have gone to housekeeping. May happiness and prosperity be with them in their new relations

They lived in Lyons, CO in 1923.
Listed with $18,000 of land in the 1930 census, with his wife and two sons.