Original sentence: In 1967, he was associate attorney for the law firm of Kelso, Cotton, Seligman and Ray in San Francisco, and from 1968 to 1969 was a senior associate at the San Francisco law firm Marshall, Kaplan, Gans and Kahn
Edited sentence: In 1967, he was associate attorney for the law firm of Kelso, Cotton, Seligman and Ray in San Francisco, and from 1968 to 1969 was a senior associate at the San Francisco urban planning firm Marshall, Kaplan, Gans and Kahn