Among all goalies who are still alive, whose first season in NHL in before 1950. List the team names they were in.
first season in NHL in before 1950 refers to firstNHL<1950; goalies who are still alive refers to deathYear IS NOT NULL
SELECT DISTINCT T3.name FROM Master AS T1 INNER JOIN Goalies AS T2 ON T1.playerID = T2.playerID INNER JOIN Teams AS T3 ON T2.lgID = T3.lgID AND T2.year = T3.year WHERE T1.deathYear IS NOT NULL AND T1.firstNHL < 1950