how many original air date where family/families is the ryder family and the schwartz family
CREATE TABLE "table1_19897294_9" (
  "no_overall" text,
  "no_in_series" real,
  "family_families" text,
  "location_s" text,
  "original_air_date" text
);
SELECT COUNT("original_air_date") FROM "table1_19897294_9" WHERE "family_families"='The Ryder Family and The Schwartz Family';