Project Gutenberg recently added a new Andre Norton short story, which she wrote under her pseudonym Andrew North.
All Cats Are Gray by Andre Norton
"Under normal conditions a whole person has a decided advantage over a handicapped one. But out in deep space the normal may be reversed—for humans at any rate."
They have a few of her best novels available too, like Plague Ship and Voodoo Planet, both part of the series telling the tale of the Free Trader Solar Queen.
And Storm Over Warlock is there as well. One of my favorites.
"The Throg task force struck the Terran Survey camp a few minutes after dawn, without warning, and with a deadly precision which argued that the aliens had fully reconnoitered and prepared that attack."
Now that's space opera.