Two post cards from 1920s

Top card : Second Ave. from 78th Street , Bay Bridge, Brooklyn, N.Y.
On the backside publisher/editor name is not printed but only " Made in USA " and the letter "M" inside a kind of mug .
Bottom card :71807 The Pike's Peak Auto Highway The World's Highest Highway
On the backside : "PHOTOSTINT" / Trade Mark Reg U.S. Pat Off/ Made Only by Detroit Publishing Co.
Would be interesting to see how those places look today !