Roberts N S Nathan Smith 1776 1852 : Report on the location and expense of a ship canal around Niagara Falls [electronic resource] : also, from the Illinois River to Lake Michigan, with a report of a select committee to the Assembly, April 14, 1834, relating to the connection from Oswego to the Hudson.
Roberts Orlando W : Narrative of voyages and excursions on the east coast and in the interior of Central America [electronic resource] : describing a journey up the river San Juan, and passage across the lake of Nicaragua to the city of Leon ... / by Orlando W. Roberts : with notes and observations by Edward Irving.
Roberts Owain T P : The Årby boat / editor, Carl Olof Cederlund ; authors, Holger Arbman, Basil Greenhill, Owain T.P. Roberts.
Roberts Owen Owen : Church revenues revealed, or, The true origin of tithes [electronic resource] : in reply to a pamphlet published by the Rev. J.W. Trevor / addressed to the rate payers by Owen Owen Roberts.