I am looking to buy a copy of D. C. Stewart’s "The Setts of the Scottish Tartans" to add to my library. In searching, I have seen there is a first edition printed in 1950 and a second edition printed in 1974 (and there may be other versions?).

Is one more desirable than the other? What makes these editions different?

Thanks in advance for any insight you can provide.

Regards,

John