Complex sentence: Houser reported that James Farmer in addition to his Chicago activities traveled the country speaking about his National vision for CORE while with FOR and that Fisher was the nuts and bolts person for CORE in Chicago and later St. Louis.
Split into simpler sentences: Houser reported that James Farmer, in addition to his Chicago activities, traveled the country with FOR and spoke about his national vision for CORE. He said that Fisher was the nuts and bolts person for CORE in Chicago and later St. Louis.