CREATE TABLE "table1_2417330_3" (
  "state_class" text,
  "vacator" text,
  "reason_for_change" text,
  "successor" text,
  "date_of_successors_formal_installation" text
);

Question: When did Orville H. Browning (r) succeed?
SQL: SELECT "date_of_successors_formal_installation" FROM "table1_2417330_3" WHERE "successor"='Orville H. Browning (R)';

Question: List all dates of succession in the state class Missouri (3).
SQL: SELECT "date_of_successors_formal_installation" FROM "table1_2417330_3" WHERE "state_class"='Missouri (3)';