“They communicate fast. And with style and wit,” noted the circa-1965 promotional copy for Howard Miller’s Pronto Posters, designed by the George Nelson & Associates team of Bill Cannan, Lance Wyman, and Irving Harper. Screenprinted onto sturdy masonite(“treated so as to stay new-looking and be used and re-used for years”), the set of 24 placards tackled a range of freshly minted workplace safety regulations and best practices, from the strategically bandaged figures of “Wear Your Helmet” and “Use Your Safety Guards” to pseudocharred “Flammable” and “Think,” in which our magenta man has forgotten his pants. An original trio of Pronto Posters (pictured) is among a stellar line-up of Nelsonian lots—don’t even get us started on the 1954-55 Carousel Weather Vane (so Crying of Lot 49!)—that will go on the block at Wright’s Modern Design sale on March 29. “They add flair and humor to the surroundings, improve morale, reduce accidents, and aid efficiency,” promised Miller. At an estimated price of $1,500 to $2,000 for the set of three, how you can afford not to buy them?