Who said "The invisible customer is the one who never returns."?

This quote is attributed to John Wanamaker.

The invisible customer is the one who never returns. - John Wanamaker

"The invisible customer is the one who never returns."

John Wanamaker Relationships

Retail Innovator American 1838–1922

"Half the money I spend on advertising is wasted; the trouble is I don't know which half."

"The public is wonderfully tolerant. It forgives everything except genius."

"One thing is sure. We cannot deny our past. Our task is not to fight it, but to fulfill our obligations to the present."

"A merchant who sells goods at a loss will be bankrupt in six months."

"The key to a happy marriage is communication."

"Marriage is about compromise and understanding."

"Life's greatest treasures are relationships."

"Trust is a luxury I can't afford."