BLACKS ARE LEAVINGSTATE OF OKLAHOMABY THE HUNDREDSOKMULGEE. Okla., Feb. 9—Fifteen Negro families, numbering more than 100 persons, left Okmulgee County recently with all their worldly belongings, for a Negro farm colony established near the city of San Luis Po-tosi, Mexico.“We are seeking greater opportunities for racial and social develdfc-ment,” announced J. B. Keys, local Negro leader.The group, according to Keys, is the first of many which are to be sent to Mexico under the auspices of the International Community Welfare1League which has secured rights to310,000 acres of agricultural lands in Mexico for Negro colonists from the J | United States.