The excess and surplus (E & S) lines industry experienced dramatic growth throughout the 1960’s. By the beginning of the next decade, it was apparent that there was a need for an organization whose purpose was to address the unique issues, concerns and needs of the E & S claim person. Founding President Carl Thornburg of the All Star Insurance Corporation in Milwaukee held a firm belief that a “cooperative sharing of knowledge” could improve professionalism in the industry. On October 22, 1970, Thornburg and six colleagues gathered in Chicago to lay the foundations for the Association by outlining its purpose and objectives in a constitution. Expanding on the Association originators’ vision, President Vince E. Donohue of the Jefferson Insurance Company noted in his 1971 president’s message:
"Organized in the latter part of 1970 by a cadre of executives of a small group of surplus and
excess carriers, the S.L.C.A. was formed, to recognize the unique nature of the “S&E”
specialty underwriting, particularly with regard to the handling, investigation and adjudication
of losses and occurrences leading to claims"