Hi Sally, I believe "Trakehners Then and Now" has information on the dam lines. I just got it when I was at the annual meeting, so I'll try to look up Isolde and Kassette and let you know what I find. I'll email you. Joy
I am sure that those 2 know way more than I do, but I'll do some research this weekend and post what I find. You never know. I might find something to add.