TUHO:
Though few outside the PR industry might have heard of E Bruce Harrison or the eponymous company he had run since 1973, he had a string of campaigns for some of the US's biggest polluters under his belt.
He had worked for the chemical industry discrediting research on the toxicity of pesticides; for the tobacco industry, and had recently run a campaign against tougher emissions standards for the big car makers. Harrison had built a firm that was considered one of the very best.
Media historian Melissa Aronczyk, who interviewed Harrison before he died in 2021, says he was a strategic linchpin for his clients, ensuring everyone was on the same page.
"He was a master at what he did," she says.