This free pattern originally published in:
Spool Cotton #77, Imported Designs of Tatting 
Crochet
Coats & Clark's O.N.T.
Book No. 516
Original Copyright 1957
Doily measures 19 inches in diameter
Materials: Clark's O.N.T. Cronita or J. & P. Coats Knit-Cro-Sheen, 5 balls Ecru or White, and 2 balls of Color 55, Navy Blue. Milward's steel crochet hook No.
COATS & CLARK'S O.N.T. "SPEED-CRO-SHEEN" MERCERIZED COTTON, Art. C.44: 7 balls of No. 61-D Nu-Ecru.