Disclosure forms released by President Obama this week shed a little more light on the financial benefits of being an author -- if your address happens to be 1600 Pennsylvania Avenue. In addition to book royalties, Obama's form for 2009 listed a $225,000 advance for a YA version of "Dreams from My Father."

Obama had previously released his 2009 income tax return, which showed that royalties from "Dreams from My Father" totaled about $3.3 million, and those from "The Audacity of Hope" totaled $2.3 million. By comparison, his salary as president was $400,000.

One other tidbit from the disclosure forms: Bo, the Portuguese Water Dog that the Obamas received as a gift from the late Sen. Edward Kennedy and his wife, was valued at $1,600. But how can you put a price on cute?