http://news.asiaone.com/news/singapore/crowds-never-local-history-exhibition
"Although the exhibition has been open since March 25, many visitors
said they came in particular to see a red box that Mr Lee used to keep
his working documents. It joined the exhibition on Thursday. Education
Minister Heng Swee Keat wrote about the box in a widely shared Facebook
post on March 24, detailing how it had been a key feature of Mr Lee's
life."