Ok, we didn't hike Mt. Margaret today. But, after our fun at Denny Creek, we drove up into the pass and found a road that gave us access to some spectacular views of Mount Rainier. I'm going to post the raw images now, but I am going to try and clean them up later and repost.
Mount Margaret is on the east side of I-90 just east of Snoqualmie Pass. Due to its elevation (we were probably 5000 ft up), it provides a magnificent view of Mount Rainer over top of the Cascades (normally the Cascades block any view of Mount Rainier from almost anywhere in Snoqualmie Valley and Pass.
Pictures are below. Those are the Cascades in the foreground!