Here I share photos of many of the mountains I have visited, organized by geographic region:
Oregon Peaks

The West Face of Mount Hood from Zigzag Canyon
The West Face of Mount Hood from Zigzag Canyon (1976-09-18)

South Sister from The Husband
South Sister from The Husband, Three Sisters Wilderness, Lane County, Oregon (1979-09-11)

Northwest Ridge of Broken Top
Northwest Ridge of Broken Top, Cascade Mountains, Deschutes County, Oregon (2020-09-30)

Twin Peaks, Eagle Cap Wilderness
Twin Peaks, Eagle Cap Wilderness, Wallowa Mountains, Oregon (2016-09-17)

Three Sisters and Broken Top from Mount Bachelor
Three Sisters and Broken Top from Mount Bachelor, Cascade Range, Deschutes County, Oregon (2018-06-03)

Mount Jefferson from Woodpecker Ridge
Mount Jefferson from the Pacific Crest Trail and Woodpecker Ridge, Mount Jefferson Wilderness, Marion County, Oregon (2022-10-02)

The High Cascades to the north from the east ridge of Mount Bachelor
The High Cascades to the north from the east ridge of Mount Bachelor, Cascade Range, Deschutes County, Oregon (2023-10-20)

Mount Washington from near Belknap Crater
Mount Washington from near Belknap Crater, Mount Washington Wilderness, Cascade Range, Oregon (2018-09-01)

Sunset on the summit of Cottonwood Mountain
Sunset on the summit of Cottonwood Mountain, Malheur County, Oregon (2022-08-04)

Wallowa Mountains from Elkhorn Peak
View southeast into the Wallowa Mountains from Elkhorn Peak (2017-09-16)

Lake Owyhee and Leslie Gulch from Mahogany Mountain, Oregon
Lake Owyhee and Leslie Gulch from Mahogany Mountain, Malheur County, Oregon (2016-06-11)

Belknap Crater, near McKenzie Pass
Belknap Crater, near McKenzie Pass, Cascade Range, Linn County, Oregon (2018-09-01)

Twin Peaks, Eagle Cap Wilderness
Twin Peaks, Eagle Cap Wilderness, Wallowa Mountains, Oregon (2016-09-17)

South Sister from Husband Lake
South Sister from Husband Lake, Three Sisters Wilderness, Lane County, Oregon (1979-09-11)

The East Face of Mount Hood from Gnarl Ridge
The East Face of Mount Hood from Gnarl Ridge (1976-09-20)

South Sister from Moraine Lake
South Sister from Moraine Lake, Three Sisters Wilderness, Deschutes County, Oregon (1979-09-12)

Abert Rim and Lake Abert
Abert Rim and Lake Abert, Fremont-Winema National Forest, Lake County, Oregon (2019-10-14)

North face of Rock Creek Butte, Elkhorn Mountains
North face of Rock Creek Butte, Elkhorn Mountains, Baker County, Oregon (2019-08-23)

High Cascades to the north from South Sister
High Cascades to the north from South Sister, Three Sisters Wilderness, Oregon (2017-10-04)

Angell Peak, Gunsight Mountain, and Van Patten Butte from Twin Mountain
Angell Peak, Gunsight Mountain, and Van Patten Butte from Twin Mountain, Elkhorn Mountains, Baker County, Oregon (2020-07-25)

Van Patten Butte from the Elkhorn Crest Trail
Van Patten Butte from the Elkhorn Crest Trail, Elkhorn Mountains, Baker County, Oregon (2019-10-04)

South Sister from the Climbers Trail
South Sister from the Climbers Trail, Three Sisters Wilderness, Oregon (2017-10-04)

Mickey Butte from Mickey Hot Springs
Mickey Butte from Mickey Hot Springs, Harney County, Oregon (2019-09-22)

Rock Creek Butte and the Southern Elkhorn Mountains
Rock Creek Butte and the Southern Elkhorn Mountains, Baker County, Oregon, (2021-09-29)

Saddle Mountain, Northern Oregon Coast Range
Saddle Mountain, Coast Range, Clatsop County, Oregon (2017-07-19)

West Fork Lostine Valley and Eagle Cap from Elkhorn Peak
West Fork Lostine Valley and Eagle Cap from Elkhorn Peak, Wallowa Mountains, Wallowa County, Oregon (2017-09-16)

Pearsoll Peak from the Kalmiopsis Rim Trailhead
Pearsoll Peak from the Kalmiopsis Rim Trailhead, Siskiyou Mountains, Oregon (2017-06-22)

Black Canyon Peak (Peak 4920) above the Snake River
Black Canyon Peak (Peak 4920) above the Snake River, Baker County, Oregon (2016-09-18)

The Coe Glacier and the North Face of Mount Hood
The Coe Glacier and the North Face of Mount Hood from the Timberline Trail near Elk Cove (1976-09-20)

Mount Jefferson from the Whitewater Trail
Mount Jefferson from the Whitewater Trail, Cascade Range, Oregon (1978-07-08)

North Ridge of Mount Washington, Cascade Range
North Ridge of Mount Washington, Cascade Range, Oregon (2016-08-05)

Middle Sister (Oregon) from the northwest
Middle Sister from the northwest, Cascade Range, Oregon (1979-08-04)

Lewis Glacier and South Ridge of South Sister
Lewis Glacier and South Ridge of South Sister, Cascade Range, Deschutes County, Oregon (2018-09-04)

Big Craggies, Siskiyou Mountains
Big Craggies from Peak 4150, Siskiyou Mountains, Oregon (2019-06-23)

North Ridge of Ruby Peak above the Old Murray Saddle Trail
The North Ridge of Ruby Peak rises steeply above the Old Murray Saddle Trail, Wallowa Mountains, Wallowa County, Oregon (2023-08-16)

Tidbits Mountain summit, Willamette National Forest
Tidbits Mountain summit viewed from below the Tidbits Mountain Lookout site, Cascade Range, Willamette National Forest, Linn County, Oregon (2022-10-06)

The Mount McLoughlin summit from the Southeast Ridge
The Mount McLoughlin summit from the Southeast Ridge, Cascade Range, Oregon (1980-08-31)

The summit of North Sister from Collier Glacier
The summit of North Sister from Collier Glacier, Cascade Range, Oregon (1979-08-05)

South Ridge of Red Mountain, Eagle Cap Wilderness
South Ridge of Red Mountain, Eagle Cap Wilderness, Wallowa Mountains, Baker
County, Oregon (2022-09-02)

Mount Hood to the West from Lookout Mountain
Mount Hood to the West from Lookout Mountain, Hood River County, Oregon (2016-08-16)