I decided to start colecting the old wooden tennis racquets after one of my tennis partners gave me one for free. Today, I went to a flee market and picked up 2 well-preserved Slazenger's KEN ROSEWELL and VIKING racquets with wooden cases. At this point I just buy them cheap locally but going forward I may have to go on **** to look for more rare items? I belong to a farely recent generation and have not experienced "wooden" tennis. What should I look for in the wooden racquets? Any particular brands, names (Jack Kramer, Billy King, etc.). Thanks.