Sentence:  Other sources of information include the National Concrete Masonry Association , 38 South Dearborn Street , Chicago , Ill. , the Portland Cement Association , 33 West Grand Avenue , <WSD>Chicago</WSD> , Ill. , and the Structural Clay Products Association , Washington , D. C. . 
Meaning of the word marked with <WSD> tags:  largest city in Illinois; a bustling Great Lakes port that extends 26 miles along the southwestern shoreline of Lake Michigan