In addition to books related to crime fiction, I read one non-fiction book about books provided to US soldiers during World War II, a wonderful book about Canadian books by Brian Busby, and two post-apocalyptic novels.
It was a very good month of reading.
Mystery reference
Euro Noir: The Pocket Essential Guide to European Crime Fiction, Film & TV (2014)by Barry Forshaw
The book covers crime fiction books written by European authors, set in their own countries (in most cases). Most of the coverage is for current fiction. There are two longer chapters on Italy and France. Other countries included are Germany, Austria, Switzerland, Spain, Portugal, Greece, the Netherlands, Poland, and Romania. Although Scandinavian crime fiction has been covered in depth in two other books by the author, there is a chapter on those countries regarding more recent fiction from that area. Films and TV for each area are also noted. No book of this type will satisfy every reader, but since I enjoy reading any kind of book on mystery reference, it suited me.
Nonfiction / History
When Books Went to War (2014) by Molly Guptill ManningThis book is perfect for someone like me who likes to read about World War II and likes to read about books. The emphasis was on the process of getting the books to the soldiers and about the positive effect the books had on the soldiers, but there were interesting facts about many of the books also. I was very surprised at the types of books that got a lot of attention from the soldiers.
Nonfiction / Books about Books
The Dusty Bookcase: A Journey Through Canada's Forgotten, Neglected, and Suppressed Writing (2017) by Brian BusbyThe subtitle gives a pretty good summary of this book. Brian Busby blogs on this same topic at The Dusty Bookcase, and the book gathers information from his posts over the years. I read this book straight through, over a few weeks, and I will dip into it again and again. Full of interesting tidbits and in-depth information, and very entertaining.
Post-apocalyptic Fiction
On the Beach (1957) by Nevil ShuteA post-apocalyptic novel that I enjoyed immensely. Also adapted in a film starring Gregory Peck, Ava Gardner, Fred Astaire, and Anthony Perkins. See my thoughts here.

The Wolves of Winter (2018) by Tyrell Johnson
I found this book via Judith's blog, Reader in the Wilderness. I do like post-apocalyptic novels, and the setting was intriguing... the Canadian Yukon. The story focuses on a family group that has been in the Yukon for seven years. The protagonist and narrator is a young woman who was 16 when they moved up to that area. This was the author's debut novel, and I liked it a lot. I would definitely try another book by this author.
Crime Fiction
Spook Street (2017) by Mick HerronThis is the fourth book in the Slough House series about spies who have been demoted due to some disgrace or screw up in their jobs. I loved this book and I will be reading the next in the series, London Rules, sometime in June.
The Iron Gates (1945) by Margaret Millar
Margaret Millar's novels focus on the psychological aspects of crime, and have interesting but strange characters. This one is set in Toronto and features Inspector Sands. See my thoughts here.

A Private Venus (1966) by Giorgio Scerbanenco
This is such an interesting story but hard to describe. The protagonist is a medical doctor, Duca Lamberti, who was imprisoned for several years, and can no longer practice medicine. His first job after release from prison is to guard the son of a wealthy man and cure him of his disease, alcoholism. He soon discovers that his drinking problem is caused by a traumatic event in his recent past; Lamberti begins to look into that problem.
The Dogs of Riga (1992) by Henning Mankell
I read the first book in the Kurt Wallander series in 2011. I hope it doesn't take me another 8 years to get to the third book, The White Lioness. In this book, Wallander goes to Latvia to follow up on an investigation that started in Sweden, when two dead Latvian men washed up on the shore in a raft. I enjoyed the story and I liked reading about Sweden and Latvia in 1991.

Monkey Justice (2019) by Patricia Abbott
Monkey Justice was published earlier (2011) in e-book format by Snubnose Press. Now Down and Out Press has published the stories again in a new e-book and in trade paperback. The book has 23 of Abbott's earlier stories; many fit within the crime fiction genre and most of them are on the dark side. I am glad to see more of Abbott's stories available in book form (again).