CREATE TABLE "season_2_1938_1939" (
  "episode" text,
  "title" text,
  "writer_s" text,
  "preservation" text,
  "original_airdate" text
);

Question: What date did Episode 2-01 (42) air?
SQL: SELECT "original_airdate" FROM "season_2_1938_1939" WHERE "episode"='2-01 (42)';

Question: Who wrote Episode 2-15 (56)?
SQL: SELECT "writer_s" FROM "season_2_1938_1939" WHERE "episode"='2-15 (56)';