CREATE TABLE table_76339 ("Name" TEXT, "Background" TEXT, "Title" TEXT, "Appointment" TEXT, "Presentation of Credentials" TEXT)

When was William A. Costello appointed?
SELECT "Appointment" FROM table_76339 WHERE "Name" = 'william a. costello'
SELECT "Appointment" FROM "table_76339" WHERE "Name" = 'william a. costello'