​This government website shows images of all 54 pages of the census taken in the Richmond County sector of River Inhabitants as well as the 44 pages devoted to the Inverness sector of River Inhabitants.  It is searchable by name or can be browsed page by page.

​http://www.bac-lac.gc.ca/eng/census/1881/Pages/about-census.aspx
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​(from the website): 
​The 1881 Census marked the second regularly scheduled collection of national statistics. It officially began April 4, 1881.
A total of 205 commissioners were appointed to coordinate the census. Reporting to the commissioners, 3,183 enumerators were then assigned to a clearly defined area.
Enumerators visited 192 census districts, divided into 2,139 sub-districts. These units were made up of cities, towns, groups of townships, Indian reserves, and other less well-defined areas. In 1881, it would have been almost impossible to conduct an enumeration of Aboriginal people over a great extent of the unorganized territory of Canada. For this reason, names of Aboriginals may not have been recorded for districts 187 (New Westminster, BC) and 192 (Northwest Territories).
Enumerators collected information for 4,278,327 individuals distributed as follows:

• British Columbia (48,886)
• Manitoba (64,824)
• New Brunswick (321,251)
• Northwest Territories (10,973)
• Nova Scotia (440,558)
• Ontario (1,924,271)
• Prince Edward Island (108,911)
• Quebec (1,358,653)