In the last quarter of the twentieth century, urban law practice changed ma
rkedly. Using data from two surveys of Chicago lawyers, the first in 1975 a
nd the second in 1995, the article argues that the most consequential devel
opment was the sheer increase in the size of firms. The organization of the
delivery of legal services was restructured, and the relationships between
lawyers and clients changed. Growth in the power and prestige of corporate
inside counsel, greater competition among law firms, and the move by those
firms into broader geographic markets precipitated changes in firm managem
ent. The recent movement into the international market for legal services o
f large accounting firms, financial services firms, and consulting firms (c
reating "multidisciplinary" partnerships) suggests the possibility of more
far reaching changes in the next decade or two.