I have a painting done by Alfred Owles, c.1940, entitled, "Green Shadows." It's painting No. 5. In mint condition. Can you please tell me how much it's worth?

We can't really assess artwork, angel, as you can appreciate, in order to do this properly, the painting has to be in hand and a lot taken into consideration. Even if you posted a link showing your art, it would be impossible. I suggest you visit an art historian to find out what your painting is worth.