I didn't realise until after I'd bought it that this book was written in 1977 (and then revised in the early 80s). It's important to remember that because, in this book, Danny Newman is an ardent evangelist for the idea of subscriptions in the arts (an idea now which is almost taken for granted in the arts world today).
As such, the book comes across as rather quaint. Back then, the idea of getting people to come to all your shows was seen as radical. Today, it's old hat. More importantly, we no longer see the fantastic success rates that arts companies saw thirty years ago. No longer will a subscription drive triple your audience in a couple of years - and this is before the classical music crisis and rise of the non-committal generations who don't like to book anything in advance.
But far and away, the worst thing about this book is the style. Verbose to a fault, it could easily be cut in half.
So all in all, worth reading as a historical piece but there are far more relevant books out there on arts marketing.