Does the 9th house or the 9th bhava cusp rule libraries?
I was thinking about possibly the 8th house too (others'/collective resources, deep research, volumes of old knowledge, history, wisdom, etc)
But the 9th house rules established culture and ancestry (like one has access to in higher education), spiritual path, gurus, and faith.
But faith is not the same as knowledge and research?
"Collections" are 2nd house. A library is a collection of books, documents, and records of knowledge. It requires responsibility and maintenance.
I guess I am talking about the actual place and environment of a library, and in the relation to its main function. In the most direct and basic sense.
What would be a "library transit"?
I would use 9th and 4th together for libraries with Jupiter as karaka. Notice Benjamin Franklin's chart which has 9th lord Jupiter exalted in the 4th and he started the first public library.
Sounds good. Thanks.