You can add to the archives of William Shakespeare at the Folger Shakespeare Library’s “adoptions for acquisitions” event Thursday. (ASSOCIATED PRESS)

Didn’t know the great Shakespeare actor David Garrick had a prayer book? At its annual auction or “adoptions for acquisitions” night on Thursday, the library is asking for a patron to adopt this 1747 book for $2,500. Once adopted, Garrick’s book stays in the archives.

This is one of the classiest fund-raising events in Washington, with 70 items on display for adoption.

And some items are extremely pricey. There’s a recipe book compiled, starting in 1674, by Lady Anne Carr. Adoption price; $10,750. Actress Ellen Terry kept notes on performing Imogen in “Cymbeline” in 1896. Adoption price: $7, 450.

There are letters between Henry Irving and Sarah Bernhardt. Adoption price: $675.

The auction and buffet supper start at 6:30 p.m., with an admission ticket of $100. Some of the items are already online for viewing.