In 1938, the Catholic Archdiocese of New Orleans hosted the Eighth National Eucharistic Congress.  This was a huge celebration involving the entire city.  This picture shows Canal Street decorated for the Congress.  It is looking lakeward; the closest intersection is with St. Charles and Royal Streets.  Perhaps the most striking thing about this picture is the double line of palm trees along the neutral ground, since this part of Canal Street did not have trees of any kind in this period.  But a close inspection shows that there are three light globes sticking out of the palm fronds at the top of each “tree.”  The palms were actually built on the light poles!  In the center of the picture, we see a pair of 400-class cars serving the Tulane Belt line on the center tracks, and to our right from the Tulane cars, an 800 (or possibly a 900) class car serving the Desire, Gentilly, or City Park line on the outer lakebound track.  Note the black stripe down the center of the silver roofs of the streetcars.  There is a spot just to our left from the roof of the Maison Blanche building.  A closeup look at this spot reveals that it has fins: it is a frontal view of a blimp.  The second picture below is a closeup of the center of the top picture.  The bottom picture is another closeup, with the blimp at the left and a good view of the top of one of the decorated light poles at the right.