While it is impossible to be able to determine with absolute certainty (due to the possibility that Bruce Lee may have purchased older books during the 1972-1973 time frame), A Bedside Book of Boxing appears to be the newest and quite possibly the last book on the subject of boxing that Bruce Lee ever acquired.
This appears to be the last book on dietary health added to Bruce Lee's personal library. It is possible, however, that this book may have been purchased by Linda Lee rather than Bruce Lee. Nonetheless, it is interesting that Bruce and Linda Lee would be exploring the idea of a meatless meal plan at a time when Bruce Lee was noticeably struggling to retain weight in the final year of his life.
This book about the life of German author and philosopher Herman Hesse was the last known biography Bruce Lee acquired. Lee was a devotee of Herman Hesse's writing and had 15 books authored by Hesse in his library.
This book by Lee's friend and sometimes student Leo Fong was published in 1972 and was one of the last books on Chinese martial arts that Bruce Lee added to his colleciton.
Myths To Live By, written by noted author Joseph Campbell, was first published in 1972. It is likely the last book Bruce Lee acquired on the subject of mythology.
Neue Kniffe und Griffe im Jiu-Jitsu/Judo, written in German by author Erich Rahn, was first published in 1972 and is likely the last book on Judo or Jujitsu that Bruce Lee acquired.
On Directing, by Harold Clurman, was first published in 1972 and is one of the last books Bruce Lee bought on the subject of filmmaking. Lee made his directing debut with the film Way of the Dragon in 1972 and was in the process of directing his next film, Game of Death, when he died in 1973.
The Fundamentals of Goju-Ryu Karate, by Norimi Gosei Yamaguchi, was first published in 1972 and one of the last books Bruce Lee acquired on Japanese martial arts.
The Handbook of Film Production, by John Quick and Tom LaBau, was one of the final books on filmmaking that Bruce Lee purchased. In the last year of his life, Lee was taking a more active stake in the productions of his films, adding producer and director to his duties that already included acting and fight choreography.
The Impossible Question by Jiddu Krishnamurti was first published in 1972. It is one of two books written by Krishnamurti that Bruce Lee purchased in the last year of his life.
Why would a man, who is struggling to retain his weight during the last year of his life, indulge the idea of fasting? An interesting question that this book, first published in 1972, brings to mind.
Bruce Lee had an interest in the subject of Gestalt Therapy, evidenced by the six books on the subject found in his library. The Task of Gestalt Psychology by Wolfgang Köhler, published in 1973, appears to be the last one he acquired.
Wing Chun Kung Fu by James Lee, published in 1972, is not simply one of the last books on Chinese martial arts that Bruce Lee acquired. The listed author was his friend and student James Yimm Lee, and it is generally accepted that Bruce Lee ghost-wrote the book for an ailing James Lee, who died the year the book was published.