Photo: Rock Bluff School (Naomi Institute) – Ammodramus – 2012 – Creative Commons
The Nebraska Historic Buildings Reconnaissance Level Survey Final Report – Cass County – Prepared for the Nebraska State Historical Society State Preservation Office – 2004
This is a wonderful resource for Cass County on historic buildings with brief written histories. Included are photos of many schools and churches and other structures. You can preview directly below (scroll on the right) or you can click the link on the bottom of the preview window to go to a searchable, printable, downloadable PDF (70 pages) version.