It's a MacPaint "pict" file. Open it with MacPaint, or on a modern Mac, select it in the Finder and hit the spacebar or use Preview. Not many modern apps support the old file formats. Tried to open one of your old MacWrite docs lately? The only reason Finder supports pict is Steve wanted to show that Snow Leopard could still display the first Mac docs, and he used QuickLook to show the Woodcut picture at WWDC a couple of years ago. Preview won't open a MacDraw pict or a MacWrite doc.