From the Iowa Library Quarterly:
The dedication of the new Carnegie building at Reinbeck occurred Wednesday afternoon, November 7th. There was an informal gathering of townspeople at the library, where Miss Robinson, secretary to the Iowa Library Commission, extended greetings and congratulations. 
From the Carnegie Libraries in Iowa Project:
Opening Date: Wednesday, November 7, 1917, library 
Dedicated on November 7, 1917, this library constructed an addition in 1992.