Land Registry Books date from the Crown Grant to the mid 1980's:

Beckwith Township;
Montague Township;
North Elmsley Township
North Burgess Twp;
Bathurst Townships;
Drummond Township;
Lanark Township;
North Sherbrooke & South Sherbrooke;
Dalhousie Townships;
Darling Townships;
Lavant Township;
Packenham Township
Smith's Falls;
Town of Perth

Instruments (deeds, transfers, etc.) date from 1865 to 1995:
(Any Instrument before 1865 is located at the Land Registery Office in Almonte, Ontario.
A charge to see these files may apply)

Beckwith Township;
Montague Township;
North Elmsley Township
North Burgess Twp;
Bathurst Townships;
Drummond Township;
Lanark Township;
North Sherbrooke & South Sherbrooke;
Dalhousie Townships;
Darling Townships;
Lavant Township;
Packenham Township
Smith's Falls;
Town of Perth

Microfilm: (To be updated soon)

Some Census records;
Almonte Gazette:

Books: (BMD Lanark County)

Lanark Era (Newspaper) Volumes 1,2,3

Family History Books: (To be updated soon)

Robert Irvine
Nathaniel Caswell
Samuel Crampton
Thomas Kirkham (Soldier Tom)

Historical Atlas': (To be updated soon)

Lanark & Renfrew Counties