So you think a trip to one of our greatest national parks, a natural treasure of breathtaking beauty we all jointly own, is something to consider only during the peak summer vacation period.  Well, before you book it for next July or August and finalize your plans for Thanksgiving with grandma, have you considered spending this Thanksgiving at Yosemite?  The mid to late fall time period, and specifically the week of Thanksgiving, is a fantastic time to visit our nations third oldest, third most visited, and in this writer’s opinion, most magnificent national park.  The weather is maybe the very best for hiking, accommodations are much cheaper and available on…