This title came out at four different numbers. The D edition was the first printed in number 364 in 1958. Number 538 was next and was printed in 1965 with a J as the first printing. From this information we could deduct that your copy was printed in the late 1950s.
I have a LGB numbered 364 on the front cover. it has a copy right date of 1942 and a letter E on the last page. The last story listed on the back cover is 392 hymns. Can you help me to determine its age please. I am a new collector and would apreciate any info that you could provide me. Also are the books with the letters in the back the oldest LGB. THANK YOU