Question: What is the release date of the Bonus interview with Peter Purves?
SQL: SELECT "release date" FROM "1-1681535-1" WHERE "Notes" = 'Bonus interview with Peter Purves';

Question: Which narrator has the Bonus interview with Frazer Hines?
SQL: SELECT "Narrator" FROM "1-1681535-1" WHERE "Notes" = 'Bonus interview with Frazer Hines';

Question: What is the release date for Destiny of the Daleks?
SQL: SELECT "release date" FROM "1-1681535-1" WHERE "Title" = 'Destiny of the Daleks';