Ask your Princeton Librarians and Archive Specialists for advice before you plan your archive trips.
General archive preparation applies for archives and libraries outside the US, UK, and Europe as well. After you have determined that you want to visit a specific institution and you have an idea of what you want to look at from exploring their finding aids, the most important thing to do before your visit is to contact the library. Check their websites, see if there are e-mails or phone numbers to contact and go from there. It is helpful for them to know you're coming. From there, you should think about and be ready for the following things:
Paperwork documenting who you are and what you are researching can ease access to collections. Think about obtaining paperwork from the following:
Every reading room experience will be different