Research in original sources can be difficult if you do not live near the repository.
Good news: several archives in the Netherlands offer scanning on demand from their finding aids. They will scan the records for you. Often, they’re put online for everyone to use, while other archives choose to send you the files personally. Some archives charge a fee, others provide this great service for free.
See the list of archives that provide free scanning-on-demand.
I am evaluating a birth record in Oostdongeradeel, Friesland in 1857. A witness gave his occupation as Kastelein (the word was capitalized in the document). I have consulted a number of online Dutch word list. Most give multiple English words: landlord, innkeeper, and barkeeper are the most common. In the 1850s in the Friesland area, was one usage more common than others?
Bar or innkeeper.