NEW YORK — Swann Galleries’ spring offering of African American Art on April 22 was the second-highest-grossing sale in the 13-year history of the department, with its highest number of participants to date. “I am thrilled to see the continued growth in our African American art auctions with a tremendous sale. Three hundred and ninety eight registered bidders — not counting those on other platforms — competed for eight hours to bid on 220 lots. We set 13 artist records and saw high prices all around for many artists,” noted department director, Nigel Freeman. Internet live bidding was facilitated by LiveAuctioneers.