The Children’s Place is a children’s clothing retailer founded in 1969, comprised of hundreds of stores, which operates primarily in the United States and Canada. They began using a tightly-tracked implementation of Formula for their logo, and continued to use it throughout the 1970s.
Kids from the 1970s and 80s often remember this store fondly as it has a slide, a TV, and a pipe to crawl though (crawl pipe shown in one of the images below).
Given that Formula was released in 1970, and the Children’s Place began using it that same year, this is likely to be one of the earliest significant uses of the typeface.
The title and body text of the print ad are set in Tempo, Ludlow’s Futura follower. The giveaway is in the alternate two-story a used in the headline.