copyright

This is a question about copyright laws.  I have a book from the library which is copyrighted 1942 saying, all rights reserved, This book, or parts thereof must not be reproduced in any form without permission.  So if the book is copyrighted in 1942, is it still copyrighted, or has the copyright expired by now, 68 years later.  There are some prints of water colors in the book I would like to share.