"brian0918" schreef
Someone suggested this is a Sassafras leaf, but I don't know enough
about tress to know whether there are any other leaves that look
similar.

http://memory.loc.gov/pnp/matpc/14900/14963v.jpg

***
Curious, a brian0918 inserted this very picture yesterday in
http://en.wikipedia.org/wiki/Common_Fig
Apparently he was sure about its identity!?!

The 'fruits' are characteristic: it certainly looks like a fig

http://www.bomengids.nl/usaoctober/p...g_1750leaf.jpg

The leaves bear some resemblance to Sassafras but the fruit does not.
http://www.cnr.vt.edu/dendro/dendrol...heet.cfm?ID=84

PvR