Macmillan Publishers-St. Martin's Books: 150 All Time Favorite Crochet Blocks. An enduring favorite with yarn crafters of all levels, blocks are both portable and perfect for small bursts of activity. If time is short than you can work a few rounds at a time, and being portable you can carry a few with you and work on one block at a time. Author: Sarah Hazell. Softcover, 160 pages. Published Year: 2015. ISBN 978-1-250-06878-1. Imported.