Printers' Ink, Sep 30, 1896 (Vol. 16, No. 14): "Soliciting Trade by Correspondence" by Claude C. Hopkins
The pattern
This still sits in the public-domain pool. No pattern name yet.
Why it works
Claude Hopkins detailing tactical methods for soliciting wholesale dealer trade by mail. Showing manufacturers how persuasive letters open retail dealer accounts cuts sales travel costs.
Steal this when
When opening new wholesale dealer accounts through systematic direct-mail sales campaigns.