I see what you mean. -for safety reasons.....that hadn't occurred to me.
I wonder if she was afraid of being kidnapped- or was she thinking of her jewels?
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I just happened across this original slide that shows remnants of Bunker Hills. (late 1960s or early 1970s)
here:
http://www.ebay.com/itm/SCRTD-LOS-AN...gAAOSwo3pWddNb