Old BMX Stuff Wanted

http://bmxmuseum.com/bikes/dk/

Actually, their history writeup is a bit wrong.

K&G cycle shop is where this all started, and one of the owners name was Kramer.
I'm fairly certain DK stands for Danishek/Kramer.

One of their stems was the first part I ever got.
back then Suntour/Shimano stems were very expensive and both top and bottom were aluminum. The Mongoose stem was really strong, but very heavy and clunky.
I went itnto their shop, and said "I keep breaking these, is there anything else?"
The man behind the counter said..."Let me show you something we've been working on..." They sold it to me for like $15 and it was on my bike until I left Ohio 6 years later.
It was a very square aluminum top, but a cr-mo bottom. Dug my knee a couple times, but never broke. Man I was proud of that thing. I told everyone where I got it.