Nice find, there are not to many books written in Romanian before 1800, mostly because of the occupancy. In Wallachia because of the phanariotes, Romanian was not even taught in school, till Gheorghe Lazăr started teaching it at the Holy Sava School. In Moldova the predominant language of books was slavonic. In the late 1700s books started to be printed in Romanian also in Vienna and Budapest, due to "Școala Ardeleană" movement.

If you happen to find some books in Romanian, in any form of writing, and don't need them, let me know.