Sorting these covers by decade
The Maltese Falcon by decade
Dashiell Hammett
27 covers from 24 printings with a known year, 2020s back to 1930s
2020s
1 cover · 1 publisher, Sanage Publishing House Llp
2010s
2 covers · 2 of 2 printings say paperback · 2 publishers, EDICIONES AMERICANAS and RBA Editores among them
2000s
10 covers · 3 of 10 printings say paperback · 7 publishers, Orion and Companhia das Letras among them · 3 languages
1990s
4 covers · 2 of 4 printings say paperback · 4 publishers, Debate and Edicions 62 among them · 2 languages
1980s
3 covers · 2 publishers, Vintage Books and Laksana among them · 2 languages
1970s
3 covers · 2 of 3 printings say paperback · 2 publishers, Diogenes and Vintage among them · 2 languages
1960s
2 covers · 2 publishers, Dell and Alianza among them
1950s
1 cover · 1 publisher, Alfred A. Knopf
1930s
1 cover · 2 publishers, Vintage Books and A.A. Knopf among them
Covers from Open Library, each in the decade of the earliest printing that carries it. What the catalogues never scanned is missing here too. See the whole wall.