Here are some comic strip and cartoon books scheduled for April 2019 release.
Images and links via Amazon (though ordering through your local comic book shop is a good idea.)
The Star of the Telegram: The Cartoons of Harold Maples
Johnny Hazard The Newspaper Dailies Volume Seven: 1954-1956
The Art and Humor of Johnny Hart
Baseball Epic: Famous and Forgotten Lives of the Dead Ball Era
Drawing Conclusions: The Political Art of Michael de Adder
Fifty Things That Aren’t My Fault: Essays from the Grown-up Years
The Ultimate Cartoon Book of Book Cartoons
Unicorn Bowling: Another Phoebe and Her Unicorn Adventure