On a whim I borrowed
The Best Time Travel Stories of the 20th Century from the library. Unfortunately they only had the ePub available, and I'm having to read it on my Fire in the Overdrive app. After some fiddling with the setting the renderings isn't too horrible, but I'd much rather have had the Kindle version.
The first two stories are fairly old and so aren't really written in a modern style. I've only got it for a week though, so I'll keep plugging on and then get back to the James Potter series.