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Historic Site · San Marino
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SCIENCE
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History

Robert Millikan’s San Marino

Caltech’s institution-builder lived here—and the story must include both Nobel physics and his eugenics advocacy.
Context-only story
Private residence or private residential area. The public point is deliberately coarse; do not route to, approach, or photograph a home.
The location shown is deliberately coarse or withheld. It must not be used to identify a private property.
Directions unavailable
STATUS
Active
ACCESS
No public access
PUBLIC LOCATION
Oak Grove Avenue area (approximate)
MAP PRECISION
Approximate area
EVIDENCE
Good working evidence
CHECKED
Aug 22, 2026
THE NERD PAYOFF

Why This Pin Earned Its Place

A responsible “big ideas” layer makes achievement and harm legible together: Millikan shaped experimental physics and Caltech while participating in the Human Betterment Foundation.
01
Caltech institution building
02
Oil-drop and cosmic-ray legacy
03
Human Betterment Foundation context
PEOPLE AND IDEAS HERE

The Human Network Behind the Address

The documented home remains private; only a coarse neighborhood point is public.
Robert A. Millikan
1868–1953
resident · Caltech leadership years
Millikan lived in San Marino while leading the development of Caltech and Southern California science.
Interaction circle
• Millikan formed Caltech’s “Big Three” with George Ellery Hale and Arthur Amos Noyes.
• Carl Anderson was his protégé.
• Person-specific eugenics evidence must not be transferred to Clark Millikan or to genetics as a field.
LOOK CLOSER

The Gloriously Specific Details

Location history
• The documented home remains private; only a coarse neighborhood point is public.
Interaction circle
• Millikan formed Caltech’s “Big Three” with George Ellery Hale and Arthur Amos Noyes.
• Carl Anderson was his protégé.
• Person-specific eugenics evidence must not be transferred to Clark Millikan or to genetics as a field.
Map disclosure
• The marker is a coarse area point, not the residence or parcel.
CONFIRMED · HISTORICAL ASSOCIATION
The documented home remains private; only a coarse neighborhood point is public.
INTERPRETATION · IDEA NETWORK
A responsible “big ideas” layer makes achievement and harm legible together: Millikan shaped experimental physics and Caltech while participating in the Human Betterment Foundation.
UNDERSTAND THE PLACE

Context Without a Doorstep

Public location
Oak Grove Avenue area (approximate)
Hours
Not applicable to a context-only record. A related public institution may have its own event schedule.
Access
Private residence or private residential area. The public point is deliberately coarse; do not route to, approach, or photograph a home.
Map disclosure
The marker identifies a general area, not a house or parcel.
Photography
Do not photograph residents, windows, or private property, and do not linger.
Read the primary research source ↗
ACCESSIBILITY
Details need a check
Unknown, and not assessed as a visitor destination because public access is unavailable or the site is sensitive.
ACCESS & SAFETY
Specific, not sensational
No trespass, doorstep visits, address hunting, or attempts to refine the approximate marker. Learn from the public story instead.
TRUST & SOURCES
usable
Every visible claim is connected to a source and review date. Unknown never silently means no.
City of Pasadena historic context — Caltech and Robert Millikan ↗
Checked Aug 22, 2026
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