This set of 16 hardcover books is a must-have for anyone interested in expanding their knowledge of various subjects. The Collier's Encyclopedia Yearbook covers a wide range of topics, including English, General Knowledge, and more. Each book is authored by Collier and published by Random House, ensuring a high level of quality and accuracy.

The set is from the years 1957-1972 and is in an acceptable condition. The books are great for collectors or those who enjoy reference books. The format is hardcover and the language is English. This set is a valuable addition to any library and will provide hours of informative reading.