B&S and Jackson & Sharp built ten windowed cabooses, but they aren't identical. J&S hung an iron coupler/drawbar under the frame, B&S has the coupler on centerline with the endbeam. The Silverton and Rio Grande cabooses discussed look to be J&S products or copied from them. Another B&S spotting feature are the three exposed nuts and washers and rods running across the frame. This is present on their first cabooses, and were still on cars built into the 90's. The models are B&S, the ten windowed car matches Mr Hees's illustration, the #3 car was a later design, no center window, and less glass in the cupola, along with a sharper curve to the roof. The Tionesta Valley had cars like this in use until abandonment, one ran on a chemical company operation into the 1940's. A Tionesta B&S built caboose survived as a wreck in the woods of Brookston Pa into the 90's, probably nothing left now except the tie rods.
brian b