From the Archives: The first Earth Day was observed April 22, 1970 - The San Diego Union-Tribune
From the Archives: 1970: Balboa Park undergoes face-lift - The San
Earth Day PDFs combined - Celebrating earth day-Earth day
These Pictures Show Just How Big The First Earth Day Really Was 50
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The First Earth Day: A founder of the original teach-in remembers
From the Archives: Flag Day - The San Diego Union-Tribune
Calaméo - Earth Day
United Auto Workers - Wikipedia
1973-07 SJU Alumni Magazine Volume 13 Number 01 Summer - SJU
Vintage: Celebrating the first Earth Day
From the Archives: The first Earth Day was observed April 22, 1970
Eyes on San Diego: San Diego Loyal's final game - The San Diego
Decades Ago at San Diego State, NewsCenter
These Pictures Show Just How Big The First Earth Day Really Was 50
From the Archives: Thousands observed the first Earth Day - The
The University of Notre Dame Class of 1969 Blog: April 22, 1970
