In Beatles lore, a woman named May Pang is forever linked to the phrase “Lost Weekend.” That 1973 “weekend,” which lasted 18 months, is when John Lennon left Yoko Ono and, according to legend, wandered drunkenly in a haze until she took him back. (He was thrown out of LA’s Troubador nightclub twice, once for heckling the Smothers Brothers and once for walking around with a Kotex on his forehead.) But May Pang, the young personal assistant he was living with, remembers the time differently. Lennon, she says, was mostly happy and productive, working on Walls and Bridges and his oldies album. Recently she found a shoebox of old photos that support that claim and make up the bulk of Instamatic Karma . The photos are decidedly casual – focus is an elusive thing – but they offer a nice look at Lennon and the mid-70s rock world. There’s a series of photos taken as guests walk through the front door to Lennon’s New York apartment. Paul and Linda, Mick Jagger, David Bowie all gr...