On leave from occupied Germany 1946, my father collected a number of post cards from his travels. A trip around Lake Geneva seems to be one of the activities.
The "Port du Mont-Blanc" seems the place you got on board to travel around the lake. The ship with the central smoke stack seems the one to take. "Mont-Blanc" towers centrally in the picture shown above.
Moving on down the bridge shown above, you must have come the port from which the ship boarded. The position of "Mont-Blanc" has moved to the left of center. The fountain is now visible spraying into the air.
A little wider angle shows the ship leaving the port. The card reads: "Geneve, La Rade, le Jet d'Eau et le Mout-Blanc." Sort of the big picture I suspect. "La Rade" may have been the name of the ship. The fountain is called "le Jet d'Eau", and of course "le Mont-Blanc" is shown.
On the return trip you must have passed closer to "le Jet d'Eau" which is stated on the card at "90 m". Lots of buildings are around the lake, and "le Mont-Blanc" stands proudly in each picture. Hum...Lake Geneva 1946...the white mountain...and a fountain of hope...wonder how it has change since this trip around the lake.