London's Somerset House is where John F. W. Herschel supposedly defined the term photography in 1839. So it's fitting that it is hosting London's biggest photography fair in May 2015. Featuring three exhibitions, an installation, a program of special talks, and over 70 participating galleries from across the globe, Photo London will spearhead a citywide celebration of photography. Flipping through the pages of this tome, readers will glimpse the variety of works on display, from vintage images dating from the dawn of photography to boundary- pushing contemporary photos. With the support of the LUMA Foundation and collaborations with the esteemed Courtauld Institute of Art, Victoria and Albert Museum, and National Portrait Gallery, Photo London thoroughly reflects the city's place within the annals of photographic history.