The most recent biography “John Hampden, The Patriot” was written by John Adair and can be purchased from the Society via this website.
There is no Hampden Archive as such. Some Hampden family records and papers can be found in the Buckinghamshire Archive (formerly the Centre for Buckinghamshire Studies) in Aylesbury. The centre is open Tuesday to Thursday from 9am to 5.15pm and 9am to 3.45pm on the first and third Saturdays of the month. Check the Centre’s website for any changes.
Details of opening hours during the lock down can be found at Bucks Archives
Please do not hesitate to contact the Society if you know where any records or papers relating to John Hampden are located.