The Pcl was not a negro league. The PCL was a
minor league, but it was a league that played a very high caliber of baseball. In fact, many believed that the PCL would have become a third major league (joining the AL and NL) had the Dodgers and Giants not moved to the west coast in 1958. Some players chose the PCL over MLB. (Anyone ever hear about Steve Bilko?)
The PCL was granted "open classification" status by Major League Baseball in 1952 and as such was recognized as a super minor league, but that was as close to the major leagues that the PCL would ever get.
http://negro-league.net/