3 4 more KDP backlist titles, since you're probably already looking at this thread to see the ones above and they'll likely all expire around the same time anyway:
The Bastard, a French Revolution-set historical romance by Brenda Novak, who also has a previously HarperCollins printed maybe-Regency/maybe-Victorian pirate romance available until 10 pm PST today
in multiple formats without DRM at All Romance.
The Pearl of Paradise: A Romance Novella, a paranormal romance which may actually be a self-pub, but is offered by Jean Brashear whose contemporary fiction
The Goddess of Fried Okra is
currently free from publisher Bell Bridge Books for Kindle and in ePub at Kobo.
Bookmarked to Die: A Miss Zukas Mystery by Jo Dereske, who was paperback-published by Avon/HarperCollins starting in the mid-90s.
Bonus non-KDP Irish historical romance by Miriam Minger, who's kindly made it available to all on Smashwords instead of going with this exclusive-or-else lockout thing:
Wild Angel, originally published in paperback by Jove in 1994 (also
free on iTunes, for those who want a syncable version for their iDevice)
She's also offering a free iTunes iBook for children:
Little Mike and Maddie's Christmas Book
ETA: Minger has also marked down a few more of her historical romances to 99 cents at Amazon (DRM-free), and will presumably promote them in other stores as well, since apparently the backlist author consortium she belongs to is holding a holiday sale.
Captive Rose (Crusades),
Defiant Imposter (US plantation),
Secrets of Midnight (generic Anglophile) all just 99 cents each (regular $3.99)
And one more freebie from formerly Dorchester-published Gemma Halliday, who it seems has yanked her "Hollywood" chick-lit mystery series from all the other stores in order to make them Kindle-exclusive (with DRM, sigh):
Hollywood Headlines, formerly published as "Scandal Sheet".
ETA #2: Cynthia Wright is also freebieing without restrictions at Smashwords the 1st in her US Revolutionary War historical romance "Raveneau" novels:
The Silver Storm (originally paperbacked by Ballantine Books), also on
iTunes.
She's also offering two more of her Revolutionary historical romances on sale @ 99 cents each (same backlist consortium as Minger above).
Caroline (nook, Kindle, Smashwords),
Touch the Sun (on sale for nook and Kindle only) both DRMed at Amazon