(1990s?)
Robert Scriver
Robert Scriver (1914 - 1999) was an American sculptor specializing in Western and wildlife subjects.
This statue grouping of several members of the Lewis and Clark expedition, including Seaman, is at the Lewis and Clark Interpretive Center in Great Falls, Montana.
This center also features a separate statue of Seaman, by sculptor Joe Halko, pictured below with a Newfoundland who occasionally serves as a greeter at the center:
The above image is a screengrab from a brief news video (KRTV, Great Falls, MT) about that Newfoundland, which you can watch here.
And here's that same statue with another Newf :)
Kudos to this interpretive center for being so "Newfie-forward":
