I've tried to hunt down old interior design books at used book stores (of which there are plenty in Michigan) and it's pretty difficult to find anything earlier than the 80s.
You might want to start consulting books which compile advertisements, such as the series which includes this book.
I haven't gone into too much trouble to search for collections online but there seems to be some freely available and others for purchase. If I remember to retrieve this thread later I'll try to post some results of things I come across.
I'd welcome any guidance as well.
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