REMOVE

1. graphite
2. testimonials
3. viewers (observers)
4. art schools (institutions)

WHAT

1. Information Forms (hierar … (1)
2. art galleries (institutio … (1)
3. artists (visual artists) (1)
4. exhibitions (events) (1)

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WHERE

1. San Francisco, California (1)

WHEN

1. 1950 (1)