number
cartodb_id_
geometry
the_geom_GEO
area_sqmi_
string
change_
citation_
cnty_type_
cross_ref_
date
end_date_
end_n_
fips_
full_name_
id_
id_num_
name_
name_start_
start_date_
start_n_
state_terr_
version_
created_at_
updated_at_
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Historical county lines in the United States, 1879-1929.