Al Parker's Sisu

I'm going to DC for the first time soon and would like the chance to
see the first glider I ever saw, again. It's my understanding that Al
Parker's Sisu is there and I don't want to miss it.

A touch of background... When I was a kid, my brother Jessie was
helping Len Neimi build the Sisus and was building the trailers. We
moved from a small town to Ft. Worth about then. The first one I saw
was Al Parker's. I was 9. I was placed in the unfinished cockpit and
thought it was the greatest thing since sliced bread. We went on some
adventurous delivery trips, the longest being to Elmira to deliver one
to Gleb Derujunski (sp). I've been a glider fanatic ever since.

Anyone have any information on that particular Sisu?

Thanks in advance.

Jack Womack