Seen in a Hoskins business equipment advertisement in Business magazine (1903) for card index:

YOUR BUSINESS AT YOUR FINGER ENDS

Close to the phrase "at your finger tips". Would it have appeared before or after this?

Business: The Magazine for Office, Store and Factory. Vol. 16. Business Man’s Publishing Company, 1903. https://www.google.com/books/edition/Business/QKaxezfHjL0C?hl=en&gbpv=0.