On Wednesday, August 24, 2016 at 7:35:09 PM UTC-4, Tom Vaughan wrote:
Hello Dean, contact me privately if you would like info on the Sisu.

Here, as of June 5, 2013, are the NSM's records on the Sisus:

100 (prototype) N7983A 1s5 owner John Ryan, subsequent owner Jerry Robertson, current owner C.L. Kirchner
101 N 6390X, 1st owner Gleb Derujinsky, current owner Paul Hanson
102 N 1100Z, 1st owner John Randall, subsequent owners Al Parker, Jack Baugh, current owner National Air & Space museum
103 N 6391X, 1s5 owner A.J. Smith, subsequent owners Jack Steen, who loaned it for several years on display at the National Soaring Museum, now owned by DicK Butler.
104 N6392X, 1st owner Bill Ivans, current owner Timothy O'Donnell
105 N252JB, 1st owner Dean Svec. No longer registered, N# reissued
106 B622W !st owner Red Wright, subsequent owners Jack Baugh, National Soaring Museum. Signed over from NSM to Kentucky Aviation Museum
107 N1003 1st owner Gordon House, subsequent owner Bernie Paiewonsky (who passed away last week), now owned by National Soaring Museum
108 N1110T, 1st owner John Ryan, current owner Galen Fisher
109 N331A, 1st owner Dale May. destroyed
110 N253JB 1st owner Jack Baugh, subsequent owner Al Parker. Current owner Steve Parker