The first appearance of the Scuderia in an official US GP dates back to 1959 when the 2nd United States Grand Prix was held at Sebring. Four 246 have been entered with Britain Tony Brooks achieving the top result for the Scuderia when he came in 3rd. It was four years later that the Scuderia showed up again, participating in the VI United States Grand Prix with two cars. It was Lorenzo Bandini who participated frequently in the US GP from 1963 to 1966 and the US GP was a constant part of the F1-schedule until 1991. Niki Lauda was the first driver to have be on top of the podium in 1975 when he won with his 312T #024. This success was repeated by Clay Regazzoni on #023 the next year, Carlos Reutemann in 1977 (#032) and 1978 (#035), Gilles Villeneuve in 1979 (#037) and 1980 (#041). To be honest, the teams did have a double chance to win a US GP then, because there was a GP for the west and the east of the USA.
After the break of nine years after the last US GP in 1991, it seems to be obvious, that Michael Schumacher was the first to win in the 2000-edition, the XXIX SAP United States Grand Prix with his F2000 #205. 2002 (Rubens Barrichello with #222) and Michael Schumacher in 2003 (#229), 2004 (#239), 2005 (#245), 2006 (#254) won the US GPs. Except of 2003, when Barrichello had an accident and did not finish the race, the Scuderia took a “one-two” from 2002 to 2006. In 2005 only six driver, all on Bridgestone tires, participated in the race making it easy for “Schumichello” to come in on positions 1 and 2. Michelin had decided to withdraw all cars using their tires after Ralf Schumacher’s crash during the training session.
#262 (Räikkönen) and #260(Massa) have been the chassis used in the last US GP to date in 2007. No confirmation yet, but it might be a good bet to see #294 and #295 to continue the Scuderia’s US GP-history this weekend.
More S/N related stuff can be viewed by sneaking through F-Register's F1 Race Results database.