October 29 would have been late artist Bob Ross's 83rd birthday. To celebrate, we visited Alex Cooper Auctioneers in Towson, where a rare 1987 oil painting by the beloved PBS art instructor is going up for auction on Friday. The painting, titled "Lake with Cabin and Trees," showcases Ross's signature peaceful style featuring a cozy cabin nestled by a lake and surrounded by towering trees. What makes this piece particularly special is a handwritten note on the back where Ross gifted it to a coupl