CREATE TABLE table_17242 ("Date of Issue" TEXT, "Theme" TEXT, "Denomination" TEXT, "Design" TEXT, "Illustration" TEXT, "Printing Process" TEXT, "Paper Type" TEXT, "First Day Cover Cancellation" TEXT)

What was the first day cover cancellation for the University of Saskatchewan themed stamp?
SELECT "First Day Cover Cancellation" FROM table_17242 WHERE "Theme" = 'University of Saskatchewan'
SELECT "First Day Cover Cancellation" FROM "table_17242" WHERE "Theme" = 'University of Saskatchewan'