The boys talk about gum bichromate printing where a color image is created from three black photographs, each of which was taken using a different colored filter over the lens. There is an Instructables page on this process: (https://www.instructables.com/id/Tri-color-gum-bichromate-prints-from-digital-image/). B and H sell a kit from Photographer’s Formulary that supplies this process (https://www.bhphotovideo.com/c/product/123480-REG/Photographers_Formulary_07_0100_Classical_Gum_Printing_Kit.html).
Graham can’t remember Brendan Berry Photo’s Instagram name. He’s the guy who created the large format photographs in the skyscraper in New York. It’s incredibly compelling work. (https://www.instagram.com/brendanbarryphoto/)
Ultrafine Online have a line of paper that is panchromatic. (http://www.ultrafineonline.com/ilpapaforpic.html)
If you are in the Victoria BC area, visit the Butchart Gardens. (https://www.butchartgardens.com/)