I believe it is titled ‘snowbound’ probably 1970s, definitely prior to 1977. Boy whose hobby is collecting Wanted posters is spending time on cousin’s ranch/farm with I believe two cousins…all adolescents…they.encounter mysterious stranger…boy recognizes him from Wanted poster…the kids realize they’re in danger but can’t get help because of snow situation….eventually boy contacts dad and dad arrives with Wanted poster. Bad guy caught. I think the cover showed just a snowy landscape. This is NOT the story of Cindy and some guy, also titled Snowbound and also from the 70s. good luck and thank you!