I know you can get digital at all places. You can buy the paperback at Amazon, but not sure about the other retailers.
But this is the fun thing I want you all to have today! I made a one-page printable pdf of my backlist titles that you can print up and keep handy. Mark off the titles you’ve read, and see how many you have left to find. I’ve included all my titles through the end of this year, so there are a few titles that will (hopefully) whet your appetite for more.