Tugwell, Rexford G., “The Gypsy Strain,” Pacific Monthly Review, III, 177-96.

Wilmanns, Karl, Zur Psychopathologie des Landstreichers. Leipzig: Barth, 1906. Pp. 418.

Wilmanns, Karl, “Psychoses among Tramps,” Centralblatt für Nervenheilkunde, December, 1902.

THE LABOR MARKET AND INDUSTRIAL MOBILITY

Baker, Oliver E., Seed Time and Harvest, Bull. United States Dept. of Agric., No. 183, March, 1922.

Brissenden, Paul F., “Measurement of Labor Mobility,” Jour. of Pol. Econ., XXVIII (June, 1920), 441-76.

Brissenden, Paul F., and Frankel, Emil, “Mobility of Industrial Labor,” Pol. Science Quar., XXXV (December, 1920), 566-600.

Devine, Edward T., “The Shiftless and Floating City Population,” Annals of the American Academy of Soc. and Pol. Science, X (September, 1897), 149-64.

Fry, Luther C., “Migratory Workers of Our Industries,” World’s Work, XL (October, 1920), 600.