don't think I've mentioned Maggie Sullivan yet, a PI set just before and during WWII. Besides being well written there are many interesting tidbits abour rationing and shortages without the books feeling dated. I did not know to get a new tube of toothpastte you had to turn in the old one. scrap metal you know. although tooth powder was still commonly used too.
The first book is free, and this week the third one is on sale on Kindle.
The mysteries don't have to be read in order, but there is underlying story and relations and reoccurring characters that make reading them in order quite nice.
https://www.amazon.com/dp/B0061063ZE...8-99fb52602985
If you try the first free one and like it, there are 2 boxed sets, books 1-3 and 4-7.