|► Illinois (Richland County), Dundas — 1950 Census Population Center —|
|This monument was erected to commemorate the determination of 1950 center of population of the United States of America in Richland County, Ill. and was dedicated October 18, 1951 at the ceremony attended by Adlai E. Stevenson Gov. State of Ill., . . . — — Map (db m30393) HM|
|► Illinois (Richland County), Olney — Robert Ridgway and "Bird Haven" —|
|Robert Ridgway, leading American ornithologist, was born at Mount Carmel, Illinois, on July 2, 1850. As a youth he became interested in birds and sketched many specimens around his home. At the age of seventeen, he was appointed zoologist on a . . . — — Map (db m99118) HM|
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Jun. 1, 2020