West Memphis was officially incorporated in 1927 and continued to grow to become the largest city in Crittenden County. The availability of river and rail transportation transformed West Memphis into the manufacturing and distribution hub of the county. In the 1930s West Memphis, along with the rest of the Mississippi Delta, suffered due to the economic depression. However, the city grew and developed at a record pace. The most notable export of West Memphis from that era was its original blues music. At one time Sonny Boy Williamson, Howlin' Wolf, Robert Lockwood, Jr., and B.B. King lived in West Memphis.