The Google Drive has information about a variety of PASSAGE events.
The current constitution (approved 3/30/2017) is available here.
Though the prelim is a thing of the past, you may find these resources helpful for various first-year classes. Past exams are sorted by subject and by year. Other resources that may be helpful can be found here, sorted by subject (known attributions). Note that the most up-to-date version of Robert Littlejohn's quantum notes can be found here.
Go to the information page for the PASSAGEs mailing list to unsubscribe, change your subscription settings, and access other @mail.pas mailing lists using the links at the bottom of the page. Note that you must be on the campus network (physically or by VPN) to access these pages.