I've started transcribing bits of this book over the years (since I've got a copy, and not many other people have). But never got very far because of its sheer intimidating hugeness. Now I find someone's made the whole thing available, in scanned and ABC formats:

Oude en Nieuwe Hollantse Boerenlieties en Contredansen

There are some fantastic tunes in there, from all over north-west Europe around 1700.

For songs:

http://www.liederenbank.nl/index.php?lan=en

Somebody has put an unbelievable amount of work into that.