The mark consists of a black circle; slanted lines in the upper right region of the circle, angled from the upper left to the lower right; the slanted lines are yellow, orange, dark blue, and light blue; the wording "TON of BOS" with the "of" being located between the "O" and "S" and in a smaller font than "TON" and "BOS"; both the "B" and the "N" are overlapping the slanted lines; the "O" is shared in the middle by both "BOS" and "TON"; the "B" and the "S" are both rotated ninety degrees clockwise, such that the tops of the letters are oriented to the right; and a small image of the top of a black and white bridge appears within the letter "O".