The dataset Early Dutch Books Online (EDBO) gives access to over 2 million full-text digitized pages from over 11,000 books printed in the Netherlands between 1781-1800.
This set is freely reusable as open data: the metadata is available under a CC0-license, individual objects (page scans, OCR, PDFs) are in the public domain. Access via SRU and OAI-PMH protocols.
The set is made available by the national library of the Netherlands (KB), in collaboration with the university libraries of Leiden and Amsterdam (UvA).
The documentation is currently in Dutch only, but will be available in English a.s.a.p.