Source: Rockford Register Star, May 26, 2021.
UPS
Rockford’s Top Employers, 1980 and 2005 – 2008 article
Source: Rockford Register Star December 21, 2008
United Parcel Service – UPS – 2000, Forbes
Source: Rockford Register Star January 1, 2000
A Digital Collection of Rockford, Illinois History
Source: Rockford Register Star, May 26, 2021.
Source: Rockford Register Star December 21, 2008
Source: Rockford Register Star January 1, 2000