From the record
“The Hammond House in Calvert, Texas is a two-story Gothic Revival-style building built in 1875. It was listed on the National Register of Historic Places in 1970.”
Wikipedia article Hammond House (Calvert, Texas), CC BY-SA 4.0.
One of 5 National Register listings published here for Robertson County · listed in 1970 · category: Building.
Sources: the Wikipedia article · the case file at the National Archives · the National Register database, National Park Service · the Wikipedia article
