This book first came out in 1977, when O'Hara didn't hold the place in the poetry world that he does today. Given O'Hara's original reputation as a dilettante who wrote poems quickly and seemingly without great thought, Perloff is concerned to show how extremely well-read he really was, to establish the breadth of his poetic lineage (Mayakovsky, Apollinaire, Reverdy, Williams and more), and to emphasise the Surrealism and complexity in his work. This book has close readings of many of the poems in the Selected (though she quotes page numbers, naturally, from the Collected) and a fair bit of useful background on the state of American poetry at the time he was writing, polarised between allusive, ironic academics, and the more informal Beats, West Coast Poets and the `New York School' that O'Hara came to be considered part of. There's analysis of what made O'Hara's work so unique and how he did it, his collaborations with painters, his friendships with Kenneth Koch, Jasper Johns and others, his work at MOMA, and the reactions to his sudden death. In this re-issue there's a new introduction looking his sexuality and the phenomenon of his growing reputation. I found it invaluable when I was trying to get my head round some of O'Hara's less accessible poems. Only one problem: the book itself (or my copy) was not well-made - the pages quickly started falling out. If you're seriously into O'Hara, maybe the hardback would be better.