Frank Deford, Big Bill Tilden, Triumph and Tragedy,
Gianni Clerici, 500 years of tennis (I have an Italian and German edition), lavishly illustrated book, more European style with emphasis on cultural traditions like the picture of dying Adonis by Tiepolo with a tennis racket in his dying arms.
Rex Bellamy, Love Thirty (plus other books by this author).
David Gray, Shades of Gray (not the mummy porn),
John Barretts Wimbledon history books,
Lance Tingay, 100 Years of tennis.
Michel Sutter, Tennis (French around 1985)
Joe or so Schinkel, Tennis (around 1975)
Eugene Scott, Tennis (around 1973),
some books by Roderich Menzel (in German)
On modern tennis: Topspin, by Eliot Berry (who sadly died a few years ago)
a webiside with nice illustrations:
www.histoiredutennis.com