Today this is maid with corn syrup, so it is a vegetable product. At the time of this pretty brochure Vermont Maid Syrup was made with sugar and maple syrup.
Is maple syrup a fruit or a vegetable? The best answer I found was from rugparty on Reddit, “vegetables are qualified as a root, leaf, or any part of the plant that is edible which does not contain the embryo, so maybe.” Here’s a closer look at this booklet… [Reddit].