1923 J&P Coats Crochet Patterns - Mosaic Crochet - Promotional Ad

This original 9 x 12" promotional magazine ad from 1923 advertised the latest trend in needlework, Mosaic Crochet.  The patterns and instructions were available through J&P Coats Book No.16 which sold for 10 cents. I've not seen these patterns in many antique stores, so they evidently didn't survive or are so cherished they are kept within the family for generations.