Exactly. Bill has presentations at different times of year for bringing trees out of storage, as well as (I think) pruning and getting ready for winter storage. Free admission, but you can also buy trees, his homemade pots, and maybe growing mix. There is also a poetry reading (open mic?) typically in the beginning of September.
Bill is a cool guy. Very knowledgeable, friendly, and fair. One year when I first started growing I asked him a question about why my trees may have died and he offered advice and an invite to pick out new trees for free.
Read: I killed the trees with poor care, but that wasn't an issue, hence being fair.