https://www.tate.org.uk/tate-etc/issue-33-spring-2015/out-light-shadows
Viewed 22 Feb 2020
Link to a Tate article about photograms
SAM FALLS
Artist who sort of uses photograms- fabric is laid out covered with natural material and then sprinkled with pigment and left out in the weather.
https://www.biennaleofsydney.art/artists/sam-falls/ Viewed 22 Feb 2020
I think his pigment could be as simple as fabric dye. If the fabric was primed with soda ash first this would work.
I think I’m more looking at developing photograms with cyanotype or solar fast but I do love the serendipity of these sort of works that harness the weather and time.