Getting closer !! Those are the framing instructions !! Parsonage,, could be frame style,, 3/4 blue line, cream matt ,, Some matts have a trim line in different colors !! On a cream background but,,,Looks like these were possibly reframed at some point !! Framers do not use tape like that !! That looks like masking tape !! There is one corner that is not held down by the tape,, can you gently raise that piece that has the writing and see if thats just a piece of light cardboard covering the art piece !! Have to look close as they may be kind of pressed together after the years !!