Warhol works lead Freeman’s modern art auction May 14PHILADELPHIA – On Thursday, May 14, Freeman’s will hold its online auction of Modern & Contemporary Art. The 58-lot sale spans myriad artistic periods and features fresh-to-market works by important international artists such as Sam Gilliam, Wolf Kahn, Harry Bertoia, Henri Matisse, and Lynn Chadwick. Bid absentee or live online through LiveAuctioneers.