Houghton Mifflin Harcourt Publishing has officially filed for Chapter 11 bankruptcy protection today. This company published seminal authors such as Mark Twain to J.R.R. Tolkien and is currently over three billion dollars in debt. Boston based HMH in documents filed today listed $2.68 billion in assets and $3.53 billion in debt. Under the proposed recovery plan, Houghton's … [Read more...] about Houghton Mifflin Harcourt Publishing Files for Bankruptcy Protection