United States Census
http://www.archive.org/details/us_census

This is a great site to view census records on microfilm. It has the

 record of the population census from 1790 to 1930 of all the States and Counties.

Scanned from microfilm from the collections of the Allen County Public Library 

and originally from the United States National Archives Record Administration.

 

USGENWEB Census Project
http://www.usgwcensus.org/

Census-online Gladwin
http://www.census-online.com/links/MI/Gladwin/

1860 Unorganized Gladwin County Census

Library of Michigan 1870 Census Index
http://www.hal.state.mi.us/1870census

 

LDS Family Search (1880 Census)
http://www.familysearch.org/Eng/Search/frameset_search.asp

 

1890 Eleventh Census of the United States
Special Schedule
Surviving Soldiers Sailors and Marines, and Widow, Etc.

 

1894 Census of the State of Michigan Gladwin County Volume 1