THE NUMBER OF MENTALLY HANDICAPPED PERSONS REHABILITATED THROUGH STATE VOCATIONAL REHABILITATION AGENCIES INCREASED EACH YEAR FROM 1958 TO 1963. MENTALLY HANDICAPPED REHABILITANTS WERE YOUNGER THAN THOSE WITH OTHER DISABILITIES. THERE WERE MORE MALE THAN FEMALE, AND MORE WHITE THAN NEGRO MENTALLY HANDICAPPED REHABILITANTS, ALTHOUGH THE PROPORTION OF NEGRO REHABILITANTS WAS RISING. IN ADDITION TO FURTHER AGE, SEX, AND RACE DATA, THE REPORT INCLUDES DATA CONCERNING CLIENTS' DEPENDENCY STATUS, MOBILITY, REFERRAL, SUPPORT, PUBLIC ASSISTANCE, EARNINGS, WORK STATUS, LENGTH OF REHABILITATION, SERVICES RECEIVED AND THEIR COST, STATUS FOR OLD AGE AND SURVIVORS' DISABILITY INSURANCE, HISTORY PRECEDING REHABILITATION, AND OCCUPATION AT CLOSURE. THE SAME TYPE OF INFORMATION IS PROVIDED FOR CLIENTS WITH MENTAL RETARDATION AS A SECONDARY DISABILITY. INFORMATION IS PRESENTED IN DISCUSSION AND TABULAR (TABLES, GRAPHS, MAPS) FORM. THIS DOCUMENT IS ALSO AVAILABLE FROM THE SUPERINTENDENT OF DOCUMENTS, U.S. GOVERNMENT PRINTING OFFICE, WASHINGTON, D.C. 20402. (JZ)