This stamp, and an even fainter one like it, can be found on the east side of Horton Street between Michigan and Jerome.
I can’t find out much about Henry Davis. I’ve only turned up brief ads for waterproofing and concrete work (“satisfaction guaranteed”) in The Lansing State Journal‘s classifieds from 1952 until about 1955. In 1952 the ads were for Henry Davis and Sons, but after that they were just plain Henry Davis. Perhaps the sons weren’t interested in the business after all.
The stamp is alongside the Gabriels Community Credit Union on the corner of Horton and Michigan. The credit union was originally set up to serve the nearby Catholic church, the Church of the Resurrection.