April 20, 2021Swann CommunicationsVintage Posters Graphic Design: Auction Highlights May 2021 Read more about Graphic Design: Auction Highlights May 2021 At Auction May 13, 2021 This auction is being held in tandem with Selections from Letterform Archive, at auction May 12. European Secession & Art Nouveau Lots 201 to 218…