Annual Bell Ringing Ceremony! Join the PMA for this annual tradition on the steps of the Petaluma Historical Library and Museum. Free and open to all. At the Annual Ceremony this year, our own Mayor Glass will unveil the founding Incorporation Documents of the City of Petaluma. Our early pioneer residents created these documents in 1858 in an attempt to civilize a frontier town. It was thought the original documents were in our own city hall, but after a bit of sleuthing, they were found in the State Archives in Sacramento.