As an 18 year old judicial committee member, I had access to the congregation files. Some oldtimers will recall a book "Kingdom Service Questions" detailing the appropriate handling of various sexual matters and other sins. My natural curiosity got the best of me and I read the entire file in an afternoon, The unsealed material contained judicial cases and other sensitive matters dating back to the early 40's.
In about a dozen congregations as an elder, presiding overseer or whatever, I always read the entire file.
In the late 70's there was an effort to seal, but not dispose of judicial papers. Many congregations ignored this direction and still left judicial matters in a file, unsealed. Sometimes, these were in the congregation library, unlocked. In the last few years, care of this material may be more secure, but I wonder how many elder's wives, children, visitors, etc. have perused these materials over the years.
tms