Co-Leaders: The Power of Great Partnerships by David A. Heenan and Warren Bennis
Another great Warren Bennis book (though still not as great as Organizing Genius — one of my favorites). This book is available on Audible and I highly recommend it. and while some of the examples are very out-of-date (the book came out in early 1999) it has some classic examples worth reading. My favorite is about Helen Keller and her teacher. this is a masterful example of one of the smartest people who have ever lived (Keller) and her teacher (Anne Sullivan Macy).
this book reveals how valuable number twos are essential to an organization’s success.
summation: listen to this book