Detroit Public Library renamed one of their library branches the Laura Ingalls Wilder branch in 1967 and had a special dedication for the event with a program. The branch – still open but now simply called the Wilder Branch today – was dedicated on Monday, February 6, 1967.
You can view the full program here.
It is not clear who was in attendance at the dedication,
They also have a photograph of the branch, prior to its new branch name, here.
The Detroit Public Library also has copies of various photographs, letters and illustrations in their collection, some of which can be viewed here. It is part of Detroit Public Library’s Rare Book Collection and is open by appointment only.