Final appearance of Plastic Man in Police Comics, but Plastic Man also has his own comic book (Plastic Man (Quality Comics, 1943 Series)) which will continue until 1956
Title from cover.
Final appearance in Police Comics. Candy has also been appearing in her own comic (Candy (Quality Comics, 1947 Series)), which will continue into 1956.
Script and pencils ID by Martin O'Hearn at http://martinohearn.blogspot.com/2020/05/coming-on-like-police.html
Last appearance in Hit Comics (Quality Comics, 1940 Series) #65 (July 1950).
Only appearance in Police Comics. Jeb Rivers appears next in Doll Man (Quality Comics, 1941 Series) #32 (February 1951).
Final appearance of a Spirit reprint in Police Comics. One last Spirit reprint at Quality will appear in Modern Comics (Quality Comics, 1945 Series) #102 (October 1950).