http://louis-sullivan.blogspot.com.es/

Peoples Savings Bank

https://www.epdlp.com/edificio.php?id=844

http://www.flickriver.com/photos/repowers/sets/72057594091649784/

Peoples Savings Bank

http://louis-sullivan.blogspot.com/2011/06/

http://louis-sullivan.blogspot.com.es/

http://shredworld.wordpress.com/2010/10/18/louis-sullivan-in-iowa/

http://louis-sullivan.blogspot.com.es/

http://featuresblogs.chicagotribune.com/theskyline/2008/06/louis-sullivan.html

http://www.epdlp.com/edificio.php?id=844

http://www.artic.edu/aic/collections/artwork/72627

http://dcaiga.blogspot.com.es/2013/01/peoples-savings-bank-190911-cedar.html

http://dcaiga.blogspot.com.es/2013/01/peoples-savings-bank-190911-cedar.html