Living in the Dallas TX area we are blessed to have Joseph Banowetz and Vladimir Viardo teach/perform concerts at the Univ. of North Texas and of course show case various Russian/Soviet pieces wth the University of North Texas Symphony Orchestra.
Banowetz has showcased over the years several of Rubinstein's works
http://music.unt.edu/faculty-and-staff/detail/4 including a massive microfilm project of his complete piano works at the UNT Library, and I've enjoyed going to see him showcase another 'premier' performance with the 'student' UNT orchestra.
Vladimir is a resident professor at UNT
http://music.unt.edu/faculty-and-staff/detail/112 and his piano performances are just amazing... see his bio.