I can't help with the Received stamp, but I'd be curious what the reverse side of that National Medicine Company postal card has to say. I searched for a couple of references to the name/address on the internet and came up with a mail order promotion that the inquirer would receive "tablets" to sell, and upon successfully selling the items, they would receive a premium, either a life size doll or a shaving kit. The postal cards were apparently a device in which they would intimidate those who did not remit the proceeds from the selling of the tablets in a prompt manner.
I guess one must consider the time period when this was an active offer, but I find it quite interesting that there is absolutely no reference of what the "tablets" are, nor the price, nor what benefit they would have to anyone who would dare purchase them.

