But what we do know is that, while Joe was vice president, Hunter routinely paid at least some of his father’s household expenses, including AT&T bills of around $190 a month. We know from an e-mail on June 5, 2010, with the subject “JRB bills” to Hunter from Eric Schwerin, his business partner at Rosemont Seneca, that he was expected to foot hefty bills to Wilmington contractors for maintenance and upkeep of his father’s palatial lakefront property. Joe’s initials are JRB, for Joseph Robinette Biden. The bills that June included $2,600 to contractor Earle Downing for a “stone retaining wall” at Joe’s Wilmington estate, $1,475 to painter Ronald Peacock to paint the “back wall and columns” of the house, and $1,239 to builder Mike Christopher for repairs to the air conditioning at the cottage of Joe’s late mother, Jean “Mom-Mom” Biden, which was on his property and which he would later rent to the Secret Service for $2,200 a month. “This is from last summer I think and needs to be paid pretty soon,” wrote Schwerin of Christopher’s bill.