http://www.sec.gov/Archives/edgar/data/73986/000007398618000011/opco424b203-2018.htm
http://www.sec.gov/Archives/edgar/data/38009/000104746918001951/a2234888z424b3.htm
http://www.sec.gov/Archives/edgar/data/5272/000119312518090258/d549097d424b2.htm
http://www.sec.gov/Archives/edgar/data/5272/000119312518090260/d475031d424b2.htm
http://www.sec.gov/Archives/edgar/data/1662972/000156459018006343/breit-424b3.htm