The first ever "big" book I ever bought for myself was this [or a similar] collection, in hardback, when around 8 y-o.
Rather more years later than is necessary to mention here, it still survives, a bit dishevelled in its now faded blue clothes, but on my son's bookshelf.
Said it was a bit it too fragile to lug off to University.
I now have my New Age copy......
So I'll tip him off too................
Thanks