Census 2000 pl 94 171 techdoc
...census block boundaries. The states of Florida, North Dakota, Rhode Island, and South...RDO@census.gov.) The states of California, Florida, Kentucky, and Montana chose not to
https://www.census.gov/content/dam/Census/programs-surveys/rdo/TechnicalDocumentation/Census2000_pl94-171_techdoc.pdf