Variable Name		Mnemonic	Years		Notes
=============		========	=====		=====

Population		POP__		All		

Black Population	B__		All

Foreign Born 		FB__		1890-1980
Population

Hispanic Population	H__		1970-1990

Number of Wards		WARD__		1890-1940

Number of Tracts	TRACT__		1940-1990

Land Area		AREA__		1900-1940;	Acres,1900-1940
					1970, 1990	Sq. Mi. 1970
							& 1990

Person-Weighted 	PWDENS		1990		Equal to the
Density							density (in
							persons per sq.
							km) of the Census
							tract where the
							"average" person
							lives.

Trolley Passengers	PASSPC		1910		From 1902 Census
Per Capita 1902						of Streetcar
							Railways.

Black Servant Share	BSVTSH		1910		Share of employed
1910							blacks working as
							domestic servants.

Growth in Urban		GUM		1970		Measures the
Mileage 1950-1960					increase in miles
							of state-
							maintained roads
							within urban
							areas.  This is a
							state-level
							variable.

Number of Governments	NGOV62		1990		From 1962 Census
1962							of Governments;
							municipal and
							township gov'ts
							only.

% of Revenue from	REVIG62		1990		From 1962 Census
Intergovernmental					of Governments.
Transfers, 1962

Median Household	MEDINC		1990		From 1990 Census.
Income

Manufacturing Share	MANSHR		1990		Percent of labor
							force employed in
							manufacturing.

Income Segregation	INCSEG		1990		Dissimilarity
							Index using high
							and low income
							households.

Black Income 		INCSEG		1990		Dissimilarity
Segregation						Index using high
							and low income
							black households.

Education Exposure	EDUCEX		1990		Measures black
							exposure to
							persons who have
							attended some
							college.

Relative Rate of	SINGMOM		1990		Difference between
Single Motherhood					black and nonblack
							rates.  Based on
							women between the
							ages of 40 and 60.

Male Education		MEDUC		1990		Difference between
							black and nonblack
							share of college
							attendees.  Based
							on men between the
							ages of 40 and 60.

Time to Work		TTWORK		1990		Difference between
							average black and
							nonblack commuting
							time, in minutes.

Cost of Living Index	CSTINDEX	1990		Imputed for 59
							MSAs, based on
							income,
							population, and
							region.