My suggestion is that you join www.familysearch.org. It is free and I did a search on it and found several records on a Annie L Lowery and a Sam Calhoun. It is my go to search web site. The way it works is that only deceased persons are made available in the public side of the data base. Live people are only available for viewing in your personal account. It will take some time to get familiar with it, but it is an excellent source of birth, death, census, immigration, military and marriage records. Not all are out there, but there is a family tree out there showing Annie Lowery and Sam Calhoun with an extensive tree on the Calhoun side.
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Louisiana has a search page for death records. click below
There is an Annie M. Calhous listed who passed away at age 31 in 1932. in Caddo Parish
They charge $10.00 for a certified copy and $5.00 for uncertified.
Good Luck in your search.