Going through the Ann McCaffrey Pern pooks again, except for the ones written by her son..yuck!!
Old friends, Manning Coles series from the 40s, fell in love with his Tommy Hamblton.
Old ones..I find a lot of the ones now days are too violent and demeaning to others to really enjoy them. Probably far too old fashioned?
New ones..Sara Graves, who is a female contractor, and solves murders during construction.
Older books from the 30s and 40s give a good idea of what life was like back then, even while solving murders. Phoebe Atwood Taylor wrote some that would be good history for kids, even while giving me a lot of pleasure in rereading them.
She also wrote under the name of Alice Tilton, which are also in that time period.