Photo by Alfred Wertheimer

•  Through May 15, the James A. Michener Art Museum in Doylestown, Pa., is featuring two amazing photography exhibitions: “Elvis at 21” by Alfred Wertheimer and “Muhammad Ali: The Making of an Icon” by various photographers. [Michener Museum and The Morning Call]

•  The PR guy behind the Desperately Seeking Susan poster shoot explains how it all happened — and how the now legendary shots of Madonna and Rosanna Arquette, as taken by Herb Ritts, were repurposed for Playboy, Vanity Fair and innumerable other outlets. [My Life as a Blog]

•  A team of students helped design the balloon camera that will capture the space shuttle Discovery launch this afternoon. It will photograph the shuttle from an altitude between 80,000 and 100,000 feet. [Space.com]

•  Mark Laita’s “Created Equal” looks at different subcultures with parallel photographic portraits (i.e., black Baptist minister and KKK members and polygamist and pimp). [Brain Pickings]

•  “Delayed Gratification in the Happiest Place on Earth “: a collection of photos capturing the agonizing waits at Disney World. [Arin Fishkin via Boing Boing]