I, too, am interested in the A. K. Brill plans.  I found them
advertised in "Amusement Business" in the late '60s.

His catalog was a hoot: a little hand-bound thing all typed out
and stencil-mimeographed (as were his plans).  I bought plans for a
high-striker. He had them for carousels, roller coasters, refreshment
stands, travel trailers.  It was amazing how clever the guy was.

Philip Jamison
West Chester, PA