Two of these I picked up at Armadillocon, one at Half Price Books:
Afsharirad, David. The Year’s Best Military and Adventure SF Volume 4. Baen, 2018. First edition trade paperback original, a Fine copy. Signed by the editor and contributor David Hardy.
Brown, Christopher. Rule of Capture. Harper Voyager, 2019. First edition trade paperback original, a Fine copy. Meant to get this signed by Chris at Armadillocon but didn’t quite manage it.
Wittkower, D. E., editor. Philip K. Dick and Philosophy: Do Androids Have Kindred Spirits? Open Court, 2011. First edition trade paperback original, a Fine copy. Non-fiction book of essays on Dick from various contributors. Bought at Half Price Books for $3.39.