Glass and poison ivory

Way out in my backyard, at the border with the lady that lives behind, there is a lot of glass in the ground. I'm sure it has been there for decades. With soil erosion this glass surfaces. I asked her about it and she said that her parents used to have a house on that property before building her current house and that there was never any garbage pickup, so they dumped "stuff" at various places on the property. Well, I can understand that, but technically it is on MY property. So, whenever I can I go out with a trowel, whisk broom, and bucket and get whatever is easy. Usually I only spend a few minutes here and there. Last week I found a rather nice, intact milk bottle. I cleaned it off and will give it to a neighbor who has wanted one but complained he could only find them at flea markets and didn't want to pay. When held just right I can read some lettering on it that may have been silk screened or bled through a label. Google hasn't turned up anything about the particular dairy, so I am at a loss to determine how long that bottle has been in the ground.

While talking to the lady I pointed out one of my trees that was covered in lush green foliage. I asked her to please stay away from it and keep her grandkids away from it because it is all poison ivy. The vine at the base is as thick as an elephant's leg. As we were talking she kept saying "poison ivory"...what a hick! The poison "ivory" was hanging down almost to the ground so I sprayed it with herbicide, and after a lot of the lower stuff withered I cut that away and hauled it off. That should discourage little kids. Also I can get in there easier with the lawnmower now to keep everything cut real low. In the fall after all the foliage falls off I am going to cut the vine.