book, eBook, mp3 audio
see these links to other sites for availability.
Zen masters Osho talks about in this book:

name in book           Chinese pinyin

Nan'in
Hakuin
Joshu........................Zhaozhou
Hyakujo.....................Baizhang
Bankei
Ekido
Nansen......................Nanquan
Mahakashyapa
Zuigan.......................Ruiyan
        oshobob  The Living Workshop                                
                                                             Osho Books
A Bird on the Wing
talks on Zen

by Osho

talks given live   June 1974
Pune, India