useless trivia: What Word Means: Quiet - Mouselike?

Questions

In 1950 American network ---------- begins the tradition of Saturday morning kid shows. ?

In 1960 ---------- Gary Powers convicted of spying by USSR (U-2 incident). ?

In 1960 Francis ---------- Powers convicted of spying by USSR (U-2 incident). ?

In 1960 Francis Gary ---------- convicted of spying by USSR (U-2 incident). ?

In 1960 ---------- carries 3 dogs into orbit (later recovered alive). ?