Doc, this kind of documentation is not available at the Intel site. You can try to find this information at the Intel Museum
https://www-ssl.intel.com/content/www/us/en/company-overview/intel-museum.html
I was able to check that there is still a company named ADEK Industrial Computers who released a motherboard in early 2013 for Intel Core i3/i5/i7 processors, which contains one (non-DMA) ISA slot.