[Jimmie] Lunceford probably started the "Swing Era" with his charts for the Goodman band.
Hey KAMIKAZEKID, I believe you're referring to Fletcher Henderson, whose arrangements for Benny Goodman's band are often credited as being a major factor in launching the Swing Era. Lunceford's band was important as well; his main arranger was Sy Oliver, who later wrote charts for Tommy Dorsey.