Need really old data sheet circa 1975

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#1
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Are there any packrats out there besides myself, that may have data on an MMI5531 memory IC? Any help would be appreciated.

Thanks
Roger

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Monolithic Memories I assume? I found data on a 5561 bipolar ram 16 x 4.

What is the data you require? pinouts etc?

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I suspect these were 256X1. As far as data goes?, as much as possible. I have one I popped the lid on, if I have to I can get pinouts with a microscope. Wanted a bit more than just that.

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I found this data sheet with Google:
http://www.datasheetarchive.com/...

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Thank you everybody. Added datasheetarchive to my favorites. Found what I needed in the way of the cross reference feature.