There are many good collections of the poetry of John Keats. This selection by John Barnard is quite good and has long served as a text for college classes.
Barnard writes that the poetry of John Keats is uniformly serious and always poetic. Keats' prime concern was art and beauty. The casual reader may not even notice certain passages that resulted in severe political criticism by the Tory press and other supporters of Charles II.
The real popularity of this particular collection is the poetry of Keats himself. Barnard has assembled an excellent collection, one that is fully representative of Keats' remarkable genius. He largely avoided the longer poems of John Keats with the exception of Endymion in which he offers Book 1 in its entirety, but only extracts from Books 2, 3, and 4. Nonetheless, this abridged version of Endymion still exceeds 2000 lines.
Looking for alternative collections? John Barnard has also compiled John Keats, The Complete Poems. It was also published by Penguin Classics. It is about 750 pages, more than three times as long as Selected Poems. For example, the full Endymion is some 50 pages longer than the abridged version in Selected Poems. Barnard's explanatory notes in this collection are quite extensive, totaling nearly 200 pages in reduced print size. There is also a wide ranging appendix exceeding 50 pages, including selected letters of John Keats.
Another good choice is published by Modern Library. Complete Poems and Selected Letters of John Keats is actually a very good choice and is indeed my favorite. The introduction by John Hirsch is more than 25 pages and is quite helpful. I particularly like the explanatory notes by Jim Pollock. They are less extensive than those in Barnard's The Complete Poems, but I found them most useful.
