New York State
Carolyn P. Ward has written: '1840 census of the United States, State of South Carolina, District of Marion' -- subject(s): Registers of births, Genealogy, Census, 1840, Census, 6th, 1840 '1830 census of the United States, District of Marion' -- subject(s): Census, 5th, 1830, Registers of births, Genealogy, Census, 1830
H. E. Poppino has written: 'Abstract of the population schedules census of 1840: Jackson County, Mo' -- subject(s): Census, 1840 '[Abstracts of census records for Jackson County, Missouri, 1830-1840' -- subject(s): Census, 1830, Census, 1840, Census, 5th, 1830, Census, 6th, 1840, Genealogy, Registers of births
Anne Sheriff has written: 'Pickens District, S.C., 1840 census' -- subject(s): Census, 1840, Census, 6th, 1840, Genealogy, Registers of births
Bettie B. Davis has written: 'Lauderdale County, Tennessee, 1840 census, 1850 census, and 1850 mortality schedule' -- subject(s): Census, 1840, Census, 1850, Census, 6th, 1840, Census, 7th, 1850, Genealogy, Registers of births
Eleanor Bounds has written: '1840-1850 Effingham County census' -- subject(s): Census, 7th, 1850, Genealogy, Census, 1850, Registers of births, Census, 1840, Census, 6th, 1840 'Biehl/Beal-Kuefer descendants'
Dorothy Yoder Coffman has written: 'Census records for Yoder families, 1840, Pennsylvania & Ohio' -- subject(s): Census, 1840, Census, 6th, 1840, Genealogy
Sharron K. Sherman has written: '1840 United States census of Macoupin County, Illinois' -- subject(s): Census, 1840, Census, 6th, 1840, Genealogy, Registers of births
Drouscella Halsey has written: 'Index to 1840 census, Eaton County, Michigan' -- subject(s): Abrams Foundation Historical Collection, Census, 1840, Census, 6th, 1840, Genealogy, Indexes, Registers of births
Jane Warren Waller has written: 'Lincoln County, Tennessee, 1840 census' -- subject(s): Census, 1840
J. Dalen Shellhammer has written: 'United States census, 1840, Logan County, Illinois' -- subject(s): Census, 1840, Genealogy
Jody Powell has written: '1776, 1790 Dorcester, 1790 Worcester' -- subject(s): Census, 1776, Census, 1790, Census, 1st, 1790, Genealogy, Registers of births 'Worcester County, Maryland, 1830 census' -- subject(s): Census, 1830, Census, 5th, 1830, Genealogy, Registers of births 'Somerset County, Maryland, liber. I.K.L, 1649-1720' -- subject(s): Genealogy, Registers of births 'Worcester County, Maryland, 1880 census' -- subject(s): Census, 10th, 1880, Census, 1880, Genealogy, Registers of births 'Maryland Revolutionary War records, 1727-1851' -- subject(s): Genealogy, History, Land titles, Military pensions, Registers 'Somerset County, Maryland, 1739 tax list' -- subject(s): Genealogy, Lists, Taxation 'Dorchester County, Maryland 1840 census' -- subject(s): Census, 1840, Census, 6th, 1840, Genealogy, Registers of births 'Accomac County, Virginia, 1800, 1810, 1820 census' -- subject(s): Census, Genealogy, Registers of births 'Somerset County, Maryland livestock marks, 1665-1722' -- subject(s): Cattle, Earmarks, Marking, Swine 'Somerset County, Maryland, 1810, 1820, 1840 census' -- subject(s): Census, Genealogy, Registers of births 'Worcester County, Maryland, 1840 census' -- subject(s): Census, 1840, Census, 6th, 1840, Genealogy, Registers of births 'Hot Summer'
US censuses are done every ten years (1840, 1850, etc). I doubt you will find a census for 1841. To find abbreviations, suffixes, prefixes or other symbols used in the census forms, use Google to find census forms for the years you want (1840 census form, etc). Or you could Google "free census forms" and find websites where you can download blank census forms free of charge,