Is Mitt Romney richer than he's letting on? It's generally agreed that, if elected in November, Romney would be the wealthiest president in American history, but the extent of his wealth goes well beyond what is normally reported in the press.

According to the Romney campaign's most recent disclosure of his personal finances, he's worth between $190 and $250 million. However, those figures only include financial assets such as stocks, bonds, and cash. Presidential candidates are not required to disclose a variety of other potentially high-value holdings, including family real estate and money in certain trusts and charities. Here are some of the Romney assets that don't show up in typical measures of his wealth: