Castren 1844: Elementa grammaticae Syrjaenae, OCR Ground Truth
Matthias Alexander Castrén published Elementa grammaticae Syrjaenae in 1844. This dataset contains two scans of this work, the higher quality version originating from the Internet Archive:
https://archive.org/details/elementagrammati00cast/mode/2up
All pages are layout detected with Transkribus, and there are 26 proofread pages. Three pages contain table layouts.