Not on the list, but Vultee's model 51 and derivatives (V.54,
BT-13, BT-15 etc.) had a symmetrical airfoil - probably NACA 0015. The V.51 first flew in March 1939 per Wikipedia.
And (I'm speculating here) the earlier Vultee SE transports (
V-1A...) likely also used the same airfoil.
EDIT: While the Vultees are not listed, the Universal Products XBT-16 shows a "NACA 0018-64 mod" root airfoil. Inasmuch as the XBT-16 was a BT-13 modified to use major components made of molded plywood vs aluminum, I'd expect the other Vultees used the same airfoil.