I think this is an unsigned piece by Kent Forrest Ipsen

One of my favorite Virginia glass artists (and Wisconsin for that matter) is the late Kent Forrest Ipsen. The first three photos are of a piece that I purchased a couple of years ago. It is about 6.5" in height and 3.5" in diameter around the top. It is blown in a root beer brown colored glass with pulled streaks of whitish glass near each of the lobes. The base is ground. The form is asymmetrical, and the opening is off center and incurvate. The base is ground flat. The shape reminds me of a mushroom cloud. The seller was not sure, but attributed it as probably being Ipsen's work. I am inclined to agree based upon another item in my collection...

The fourth photo shows a tall vase signed "Kent Forrest Ipsen '74" and I have proudly owned it for many years. It features a similar incurvate, off center opening on top, similarly colored glass, and with pulled designs that also remind me of mushroom clouds. I can't help but wonder if Ipsen was making a statement about nuclear proliferation when he created it. I wrote a story about it here on Collector's weekly about 4 years ago.

So please let me know what you think. Am I right in my belief that these two works are by one artist and from the same period?