Tansy At Twilight - Maclay Flat, Missoula, Montana

Pack in a lawn chair and sit awhile, cool your dusty, summer-hot feet in the Bitterroot River, maybe even at this same perfect spot on Maclay Flat just south of Missoula, Montana. 

“The mark of a successful man is one that has spent an entire day on the bank of a river without feeling guilty about it. “ — Chinese philosopher

Snow-capped Winter Tansy - Missoula, Montana

“It was not for her to criticize the ways of Almighty God;…. if He liked to go to all that trouble over the snowflakes, millions and millions of them, their intricate patterns too small to be seen by human eyes, and melting as soon as made, that was His affair and not hers. All she could do about it was to catch in her window, and save from entire waste, as much of the squandered beauty as she could.” - The Rosemary Tree by Elizabeth Goudge (1900-1984), p. 158

Golden Blooms - The Teller Trail, Corvallis, Montana

"Why must people kneel down to pray? If I really wanted to pray I’ll tell you what I'd do. I'd go out into a great big field all alone or in the deep, deep woods and I'd look up into the sky—up—up—up—into that lovely blue sky that looks as if there was no end to its blueness. And then I'd just feel a prayer."

- L.M. Montgomery, from Anne of Green Gables #1

Summer Gold - Hamilton, Montana

The meadow view fronted by brilliant common tansy in Hamilton's semi-hidden gem, Hieronymous Park, provokes me to agree with Henry James:

“Summer afternoon - summer afternoon; to me those have always been the two most beautiful words in the English language.” - Henry James (1843-1916)

Winter Sky, Missoula, Montana

These golden weeds are everywhere in western Montana. Yet, despite their prevalence, I don't know what they're called. Sad, isn't it? They look like they should be "Western Goldenrod" but - no.
More sadness: Google was no help. Yellow wildflowers, yellow weed flowers, golden weed flowers, ..... no hits that match. And, honestly, I just didn't want to spend any more time looking today.
Additional sadness: we've become so impatient, taking for granted the plethora of knowledge immediately available at our fingertips.
So, if you can identify , please take pity on my ignorance  and leave the flower name in a Comment. (Hint: if you Comment as Anonymous or Name/URL, you don't have to jump through any sign-in hoops. And you can leave the URL of your very own blog or site & hope that someone new clicks on it!)

Update: Thanks to Andrei for identifying these (see Comment below)!
If I correctly remember, tansy is often mentioned in Victorian novels as a cure for what ails you.