It seems that a certain song can bring back many listeners a lot of memory. For that reason, the song is played and enjoyed by many.
Art hopes these photographs play the similar roles for audience to reminiscent own experiences. Whether it is joyful or painful, it appears that memories are worthwhile to keep after all.
So let's travel back for a moment.
Like drawings, Art is interested in creating images rather than capturing or reflecting what one can see. In that sense, he tries to create the images of past in his memories, everybody's memory.
By creating ceratin style or capturing memorable contents of images, he hopes that everybody can travel back and dwell in the past for a moment.