After President Barack Obama announced his summer vacation reading list this week, political journalists noticed that the chief executive’s seal of approval translated to some serious Amazon sales rank increases.

According to Politico, ‘The Way Home‘ by George Pelecanos rocketed up more than 30,000 spots on Amazon.com’s bestseller list on Tuesday, moving from from No. 33,349 to No. 328 following the presidential recommendation. The four other books on his ambitious, yet smooth-reading, list exhibited a similar rise through the online rankings on Amazon.

Here’s more from the article: “The others followed suit. ‘A Lush Life?’ From No. 74,289 to No. 10,295 on Wednesday. ‘Hot, Flat and Crowded?’ From No. 231 to No. 41 on Wednesday. “John Adams”? No. 14,301 to No. 7,067 on Wednesday. And “Plainsong” rocketed to to as high as No. 189 from its Monday position of No. 8,155.”