I'v been working for some time now on extracting some 2000 and 1990 census data. After a few failed starts, here I'll document what I've actually come up with. A bit.

== Input Data ==
Here I'll describe what I have

2000 Census Data

• [ftp://ftp2.census.gov/census_2000/datasets/Summary_File_1 FTP Root for 2000 data]
• [ftp://ftp2.census.gov/census_2000/datasets/Summary_File_1/Arizona Arizona data]
• Data documentation PDF, see chapter 7

1990 Census Data

• [ftp://ftp2.census.gov/census_1990/ FTP Root for 1990 data]
• [ftp://ftp2.census.gov/census_1990/CD90_1A_8/ Arizona data (1A)]
• [ftp://ftp2.census.gov/census_1990/CD90_3A_03/ Arizona data (3A)]
• [ftp://ftp2.census.gov/census_1990/CD90_1A_8/document/howtouse.asc General usage documentation]
• [ftp://ftp2.census.gov/census_1990/CD90_1A_8/document/list_tbl.asc Summarized field descriptions]
• [ftp://ftp2.census.gov/census_1990/CD90_1A_8/document/tbl_mtx.asc Detailed field descriptions]