I thought at first this was Galveston but on closer inspection it looks more like the bay, which was a very popular destination at the time. That’s our first math professor, Griffith Evans, at right with his little lads Georgie and Griffy. Tsanoff is at left with Nevenna and Katherine, who looks rather trepidatious:

I found these in some of the Tsanoff correspondence from the summer before he taught in Austin. This summer was a bit unusual because Corinne had gone to visit family in Arvada, Colrado but had left the girls in Houston with “Raddy.” He seems to have kept things well in hand with the help of Alma, the housekeeper, and friends who also spent the summer in town.

Bonus: The baby cedar elm reminded me of this post from 2012.