What we have here is a sort of Tiptree scrapbook. The first 190 pages, apart from some bits and scraps, mainly include Tiptree's worst science fiction story, "Happiness is a Warm Spaceship," as well as "Trey of Hearts," written for an anthology of erotic fiction by women but never published there, and "The Color of Neanderthal Eyes," a short novel that's her last completed work. It explores themes always close to Tiptree's heart, in detailing an earthman's interference with the inevitable when, on an alien planet which is mainly ocean, a land-based species begins a war of extermination against a nonviolent, idyllic species of amphibians. Tiptree's usual equation, love=sex=motherhood=death, is very much to the forefront, despite the concentration on war and preparations for war.
In the nearly 200 pages remaining, we get some Tiptree letters, articles, reviews and travelogues. In Tiptree's accounts of her vacations in Yucatan, it's interesting to spot the real-life equivalent of the Mayan pilot who appears in one of her best-known stories, "The Women Men Don't See." It's also interesting to see the several dismissive summaries of and references to what is probably her best short story, "Love is the plan the plan is death." I suspected after rereading the tale recently that she had Global Warming in mind while writing it, all the way back in 1971, and so indeed she says here. I was also able to confirm, as I suspected from re-reading many of her tales recently, that Theodore Sturgeon was the science fiction writer she admired most, and was the most influenced by.
Probably the most enlightening part of the second half of the book is a long autobiographical sketch Tiptree wrote for the reference series CONTEMPORARY AUTHORS.
I don't think there is anything here that you really have to have, that's not available elsewhere. But if you feel the need to own a "Tiptree Scrapbook," this is it.