Federal Reserve Bank of Chicago. "[The State Bank of Whiting, Whiting, Indiana and The First National Bank of Cedar Lake, Cedar Lake, Indiana Consolidated Under the Title Northwest Bank of Indiana, National Association, Whiting, Indiana], Circular No. 2107" in Federal Reserve Bank of Chicago Bulletins and Circular Letters (June 30, 1970). https://fraser.stlouisfed.org/title/7180/item/661141, accessed on February 5, 2025.