Wish You Were Here, from Dwig

For such a popular collectible, postcards seem to have a lot of unexplored history -- at least if that history is known it has avoided being reported on the 'net. This very nice Dwig postcard is from what I'll call the "Want Ad" series, all of which were copyrighted to "A. Blue" and indicated as being in series #500. I can find no info on A. Blue, but they published a very high-end card here, with nice embossing. The cards in this series are quite common, so they were evidently well-received by postcard buyers in 1909.