▁magazine ▁era . ▁ ▁For ▁years ▁pul p ▁mag az ines ▁were ▁successful ▁without ▁restrict ing ▁their ▁fiction ▁content ▁to ▁any ▁specific ▁genre , ▁but ▁in ▁ 1 9 0 6 ▁Mun sey ▁launched ▁Rail road ▁Man ' s ▁Magazine , ▁the ▁first ▁title ▁that ▁focused ▁on ▁a ▁particular ▁n iche . ▁ ▁Other ▁titles ▁that ▁special ized ▁in ▁particular ▁fiction ▁gen res ▁followed , ▁starting ▁in ▁ 1 9 1 5 ▁with ▁Det ect ive ▁Story ▁Magazine , ▁with ▁Western ▁Story ▁Magazine ▁following ▁in ▁ 1 9 1 9 . ▁ ▁We ird ▁fiction , ▁science ▁fiction , ▁and ▁fant asy ▁all ▁appeared ▁frequently ▁in ▁the ▁pul ps ▁of ▁the ▁day , ▁but ▁by ▁the ▁early ▁ 1 9 2 0 s ▁there ▁was ▁still ▁no ▁single ▁magazine ▁focused ▁on ▁any ▁of ▁these ▁gen res , ▁though ▁The ▁Th r ill ▁Book , ▁launched ▁in ▁ 1 9 1 9 ▁by ▁Street ▁& ▁Smith ▁with ▁the ▁intention ▁of ▁printing ▁" d ifferent ", ▁or ▁unusual , ▁stories , ▁was ▁a ▁near ▁miss . ▁ ▁In ▁ 1 9 2 2 , ▁J . ▁C . ▁Hen ne berger , ▁the ▁publish er ▁of ▁College ▁Hum or ▁and ▁The ▁Magazine ▁of ▁Fun , ▁formed ▁R ural ▁Publishing ▁Corporation ▁of ▁Chicago , ▁in ▁partners hip ▁with ▁his ▁former ▁frat ern ity ▁brother , ▁J . ▁M . ▁L ans inger . ▁ ▁Their ▁first ▁vent ure ▁was ▁Det ect ive ▁T ales , ▁a ▁pul p ▁magazine ▁that ▁appeared ▁twice ▁a ▁month , ▁starting