Who is the little old lady with the hat sitting in dozens of Perry Mason trials?

Here is a deep mystery that even Paul Drake can't solve.

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I'm watching Perry Mason, and I keep noticing this same little old lady in the courtroom audience. She's in dozens of episodes. : r/TVDetails

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Perry Mason Is Coming to HBO. Here's What to Know About His History. - The New York Times

Perry Mason The Case of the Demure Defendant (TV Episode 1958) - IMDb

Who is the little old lady with the hat sitting in dozens of Perry Mason trials?

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Perry Mason TV Series Wiki

A tribute to Perry Mason's overlooked receptionist, Gertie

Who is the little old lady with the hat sitting in dozens of Perry Mason trials?