Some of my favourite haiku books
Aware, A Haiku Primer by Betty Drevniok online pdf of out-of-print work
Chrysanthemum Love by Fay Aoyagi a wonderful collection of modern haiku
Collected Haiku of Yosa Buson translated by W S Merwin and Takako Lento Together with Basho, one of the four great masters of haiku
Disjunctive Dragonfly by Richard Gilbert very important guide to techniques in modern haiku with wonderful examples drawn from the best contemporary poets
Far Beyond the Field: Haiku by Japanese Women compiled and edited by Makoto Ueda
Haiku: An Anthology of Japanese Poems by Stephen Addiss, Fumiko Yamamoto and Akira Yamamoto.
The Haiku Anthology edited by Cor van der Heuvel
The Haiku Handbook by William J Higginson. How to write, share and teach haiku.
Haiku in English: The First Hundred Years edited by Jim Kacian wonderful collection
Haiku and Senryu by Charlotte Digregorio excellent advice on haiku writing
The Heart of Haiku by Jane Hirshfield currently only available in Kindle format
A Hidden Pond. Anthology of Modern Haiku Edited by Koko Kato
The Japanese Haiku by Kenneth Yasuda
Mountain Tasting: Zen Haiku by Santōka Taneda by John Stevens (tr.)
One Hundred Frogs: From Renga to Haiku in English by Hiroaki Sato
Poems of Consciousness by Richard Gilbert an academic approach to haiku and very interesting analysis of classical and modern work
Pure Land Haiku: The Art of Priest Issa by David Lanoue
The River of Heaven by Robert Aitken a Zen look at the poems of Bashō, Buson, Issa and Shiki
Seeds from a Birch Tree by Clark Strand a formerZen monk looks at haiku as a form of spiritual practice with an emphasis on the 5-7-5 form
Snow Falling from a Bamboo Leaf: The Art of Haiku by Hiag Akmakjian very insightful analysis of the haiku form
The Sound of Water by Sam Hamill a small book of classic haiku
Three Simple Lines by Natalie Goldberg
A White Tea Bowl by Mitsu Suzuki haiku poems from the widow of Zen teacher Shunryu Suzuki Roshi.
Writing and Enjoying Haiku by Jane Reichhold excellent guide to haiku writing from a revered haiku writer and teacher
The Zen of Creativity by John Daido Loori a wonderful guide to finding creativity from the still point
A Zen Wave: Basho’s Haiku and Zen by Robert Aitken a look at some of Bashō’s best known poems with a commentary by a revered western teacher of Zen
Shore/lines 
Excellent resource for books.
Thank you.
Thanks for including my book, Haiku and Senryu: A Simple Guide for All.” Much appreciated!! Best to you!
It is a great book, Charlotte, and has helped many of us in our haiku journey, and doubtless will for many years to come.
Thank you, Andy.