I'm fascinated by this design! I just wanted to check: it isn't a pop culture reference of some sort that I don't get, is it? It's just a delightfully Dada image of a rowboat in a tree--both whimsical and surreal? Executed in a very distinctive style, miles away from the "standard t-shirt look." The crosshatching of the figure for some reason reminds me of Caps for Sale--or maybe it's just the cap--or at least Edward Gorey. Meanwhile the foliage is distinctly Mod, making the whole just a titch psychedelic.