"A New Jersey Biographical Index" by Donald Arleigh Sinclair lists the following articles: * Baltus Roll (c1770-1831), "New Jersey History" (NJ Hist Soc mag) v.80:p.111-115 * J Martin Roll (b. 1843) "History of Trenton" by Francis B Lee 1895 v.2:p.75 with pic; "Manual of the Legislature of NJ" 96:p253 & 97:p278 * Joseph Harrison Roll (b. 1888) "History of Union County" by A Van Doren Honeyman 1923 v3:p221 Wilbur M Roll (b. 1866) "Manual of the Legislature of NJ" 25:340 No listings of Mangels, etc.