Here’s a picture worth well over a thousand words: Citizens for Responsibility and Ethics in Washington has assembled an interactive, “You Don’t Know Jack” graphic showing the connections between Murtha, a trio of lobbying firms, relatives, staffers and the companies for whom he’s gotten earmarks.

Well worth a look. Well worth remembering too that PMA Group isn’t just a John Murtha scandal — the firm was a top donor to 32 members of Congress in the 2008 election cycle.