Hello, I'm taking a trip over the holidays with my girlfriend through the Sierras, including some time in Yosemite, around Lake Tahoe, and on Whitney. I'm looking for some good information about good day hikes in winter conditions. The guide books I've seen advise not hiking in the snow - not helpful for a December trip! I'm looking for moderate day hikes, we'll have snowshoes, poles, and crampons, but only I have an axe, and anyway my girlfriend is not fond of anything real steep/ with lots of exposure. So we won't be attempting to summit Whitney, but would love to do a good, non-technical snowshoe hike on it. Can anyone recommend a book, a website, or one of your own favorite winter day hikes in these areas?