Which NFL team's mascot is named Sourdough Sam?

In which division do the Los Angeles Rams play? In which city is the home stadium of the Los Angeles Rams located? Which NFL team's mascot is named Rampage? In which city is the home stadium of the San Francisco 49ers located? In which division do the Seattle Seahawks play? In what year did the Dallas Cowboys play their first season? In what year did the Minnesota Vikings play their first season? In what year did the Atlanta Falcons play their first season?