Francestown, N.H., pp. 317, 903–904{{citation}}: CS1 maint: location missing publisher (link) "Died; Roper – At Cambridge. 1st inst., Sylvester H. Roper, 72 yrs...

The Roper steam velocipede was a steam-powered velocipede built by inventor Sylvester H. Roper of Roxbury, Boston, Massachusetts, United States sometime...

Transport. In the United States, a four-wheel steam carriage was made by Sylvester H. Roper in 1863. The 1896 Armstrong horseless carriage is notable as an early...

constructed around the same time as the American Roper steam velocipede, built by Sylvester H. Roper of Roxbury, Massachusetts, who had been demonstrating...

technological innovation that they invented or designed. Sylvester H. Roper (1823–1896), inventor of the Roper steam velocipede, died of a heart attack or subsequent...

RMB-93 KBP Instrument Design Bureau 12 gauge  Russia 1993 Roper repeating shotgun Sylvester H. Roper 12 gauge 16 gauge  United States 1867 Ruger Gold Label...

while at the Roper Repeating Arms Company in Amherst, Massachusetts, he worked with Charles E. Billings, and Sylvester H. Roper. After Roper's firearms company...

cylinders were coupled directly outside the cranks of the driving-axle. Sylvester H. Roper drove around Boston, Massachusetts on a steam car he invented in 1863...

Giora Tzahor, Krisztián Veréb, Emili Vicente, Sanchari Vijay 1896 Sylvester H. Roper Cambridge, Massachusetts. Crash preceded by or followed by heart failure...

(1999) George Roeder (1999) Larry Roeseler (1999) Gene Romero (1998) Sylvester H. Roper (2002) Rip Rose (2000) Scott Russell (2005) Perry Sands (2004) Robert...