![Bruning Copyflex ad](https://i1.wp.com/www.adtothebone.com/wp-content/uploads/2020/05/bruningcopyflex625m.jpg?fit=495%2C1024)
Find out a bit more about Bruning via Forgotten Chicago.
I think the “ordinary translucent paper” mentioned in the ad copy might’ve been vellum or onionskin, but I could be wrong.
What the hell is Diazotype, you ask? MoMA has you covered.
![](https://i0.wp.com/www.adtothebone.com/wp-content/uploads/2020/05/bruningcopyflexdetailm.jpg?resize=625%2C574)
Find out a bit more about Bruning via Forgotten Chicago.
I think the “ordinary translucent paper” mentioned in the ad copy might’ve been vellum or onionskin, but I could be wrong.
What the hell is Diazotype, you ask? MoMA has you covered.