Who was the cover model in the 7-86 issue?
CREATE TABLE "table1_1566848_7" (
  "date" text,
  "cover_model" text,
  "centerfold_model" text,
  "interview_subject" text,
  "20_questions" text,
  "pictorials" text
);
SELECT "cover_model" FROM "table1_1566848_7" WHERE "date"='7-86';