 "Mansikoita ja mustikoita" 1856–61 ("Strawberries and blueberries") and "Kuun tarinoita" ("Tales of the moon").As Suonio, he worked as editor of "Suomen Kuvalehti" and translated many of Sir Walter Scott's novels, such as "A Legend of Montrose".An important contribution to a history of Finnish literature was Krohn's doctoral thesis "Suomenkielinen runollisuus ruotsinvallan aikana" (1862).