This free pattern originally published in:
Spool Cotton #34, Crochet Designs For The Hostess
This free pattern originally published in:
Spool Cotton #67, Crochet For Your Home
This free pattern originally published in:
Spool Cotton #116, Curtains Tie-Backs and Curtain Pulls 
There are slight variations to materials and instructions between these versions of the same pattern in different publications. Versions are below.