Books responsible for most of Obama's assets

President Barack Obama reported up to $10 million in royalties alone from his two books, according to financial disclosure forms released Monday. 

Proceeds from the president's books — "Dreams from My Father" and "The Audacity of Hope" — were between $2 million and $10 million, most of which is heavily invested in U.S. Treasury bills, according to the disclosure forms released today. 

The forms also show the price of first dog Bo — $1,600 — a gift from late Sen. Edward Kennedy (D-Mass.) and his wife, Victoria. 

He also reported between $500,000 and $1 million in Treasury notes. 

Vice President Joe Biden's statements also were released today and reflect modest assets — mostly in mutual funds — in the hundreds of thousands, not millions. 

He did have one interesting entry — worth $3,500 — a gift of a first-edition copy of "Anna Livia Plurabelle" signed by its Irish author, James Joyce. 

For the president's form, click here. 

For the vice president's form, click here.