Still friends after all of these years

Linda and I just had dinner last night with friends John, Ann, Ian, Marlene, Kerry, and Barbara. This is the first get together since the Alaska trip. It's only been a couple of weeks since the trip, but it seems like a lot longer. We exchanged photos from the trip, and had a wonderful dinner prepared by Ann. I had just started losing some of the weight I had gained from the cruise, but I think I put most of it back on. The guys had known each other since we were just out of high school. John, Ian and Kerry have known each other longer since they went to the same school. I looked at their photos today, and Ann had taken one of the four guys, which I am posting below. You have to look close to see the difference between the photo from 1975 and the one from 2009 thirty-four years later. Let me know if you can figure out which one is which.