In July 1914, the Kendricks took
their first trip to Yellowstone National Park in northwestern Wyoming.
Since this was before automobiles were allowed into the park, the
family had to take a
train from Sheridan, Wyoming, to Gardiner, Montana - the northern
entrance to Yellowstone. From Gardiner, they traveled by
horse coach (called a Tally-Ho) to Mammoth Hot Springs, where they
stayed at the National Hotel (later replaced by the Mammoth
Hotel).

The next day, they proceeded to the Fountain Hotel (located north
of Fountain Paint Pots; torn down in 1927) via Silver Gate and the
Norris Geyser Basin. Along the way they saw Frying Pan and Roaring
Mountain geysers.
After thoroughly exploring the thermal features in these areas, the
family moved on to the Old Faithful Inn, which Rosa-Maye called "one
of the most wonderful hotels in America." That night, after a day visiting the
curio shops and exploring the nearby woods, they went to the roof of
the Old Faithful Inn to watch bears and the Old Faithful Geyser, both
illuminated by electric searchlights.

The Kendricks' next stop was Yellowstone Lake, where they stayed at
the Lake Colonial Hotel. Although they resisted the temptation to take
one of the excursion cruises across the lake, Rosa-Maye and her cousin
Eula did manage to go fishing with a couple of young gentlemen they
met along the way.
From Yellowstone Lake, the party traveled to the Grand Canyon of
the Yellowstone, where they stopped at Artist's Point. Rosa-Maye's
diary contains this description of the view:
"We looked from a jutting rock down thousands of feet into one of
the most wonderful canyons in the world. From up among jagged
rocks the Yellowstone river leaps through hundreds of feet and flies
up halfway in snow spray. Down through a narrow course at the bottom
of the cliffs it winds, plunging over boulders and dropping through
holes in the rocks."

That night, they stayed at the Grand Canyon Lodge (dismantled and
burned in 1962). Next to the Old Faithful Inn, this lodge was -
according to Rosa-Maye - "the most wonderful of our trip."
Rather than return to Gardiner for the train ride home, the
Kendricks traveled to Cody, Wyoming, via Sylvan Pass. Along the way
they stopped at the highest dam in the world, the Shoshone Dam. This
massive structure was later renamed in honor of one of John
Kendrick's personal friends, William F. "Buffalo Bill" Cody.