Soundex and 1910 Miracode Index
Ancestry.com - Soundex, Part II
1910 Miracode Index: - Google Search
HeritageQuest - 1910 Census Facts: "The 1910 Soundex and Miracode indexes were compiled in 1962 for 21 states by the staff of the Personal Census Search section of the Bureau of the Census. The Miracode indexes were done using computers, while the Soundex indexes were done on hand-entered index cards, similar to all of the other Soundex indexes.
Alabama, Georgia, Louisiana (except Shreveport and New Orleans), Mississippi, South Carolina, Tennessee and Texas.
Arkansas, California, Florida, Illinois, Kansas, Kentucky, Louisiana (Shreveport and New Orleans only), Michigan, Missouri, North Carolina, Ohio, Oklahoma, Pennsylvania, Virginia and West Virginia.
The phonetic coding method for the Miracode index is identical to the Soundex coding system.
The two differ only in the citation given for a household being indexed.
For each of the Miracode printouts, the citation includes the Volume number, Enumeration District Number, and Visitation Number (house number) taken from the original census schedules pages;
while the 1910 Soundex cards cite the Volume Number, Enumeration District Number and Sheet Number."
HeritageQuest - 1790 Census Facts: "General Information
In 1908, the Census Office undertook a project to index the 1790 census name lists, a publication now commonly known as the 1790 Heads of Families.
It includes the name lists for 12 of the 16 federal court districts that were originally enumerated in the 1790 census. Vermont entered the Union as the 14th state in early 1791, its census taken as of 1 April 1791.
Also in 1790, Maine was still part of Massachusetts, but had its own census because it was a separate federal court district. The same was true of Kentucky, which was still part of Virginia.
Name for head-of-household
Number of free white males under 16, and 16 or older
Number of free white females of any age
Name of a slave owner and number of slaves owned by that person
Census losses included Kentucky, Delaware, Georgia, New Jersey and Virginia.
Since Virginia had extant tax lists covering all of its counties for the years immediately preceding 1790, the Census Office used these tax lists to reconstruct the 1790 name lists for the state.
A few 1790 counties of other states were also reconstructed from tax lists, including certain counties in North Carolina and Maryland.
The Census Office's 1790 volumes are limited to the federal court districts of Connecticut, Maine, Maryland, Massachusetts, New Hampshire, New York, North Carolina, Pennsylvania, Rhode Island, South Carolina and Vermont, and the reconstructed Virginia lists."