DEVICES AND DATES: a Consolidated Listing of Precancel Types and Authorization/Shipping/Order Dates for Precancel Devices
This document contains of all of the available dates on which the post offices were authorized to use precancels or the dates that devices were ordered for or furnished to the offices. Formerly known as “The Lyon List”, Jim Callis and Jim Baird have not only updated this hard to find large document, but also married this data with the 2019 PSS Town & Type Catalog (8th Edition) device types. Making the Devices and Dates the replacement for “The Lyon List” augmented with the current T&T types.
Three additional appendixes added September 2026:
- “Missing” Types
- Post Offices with Authorization Dates Prior to September 16, 1913
when precanceling was done “at no expense to the Department” - Postal Regulations Regarding Ordering of Devices
It is available for free download in two ways:
1) with each chapter in a separate pdf file
2) with the entire document (1407 pages) in one pdf
Click HERE to Download with each chapter in a separate pdf file.
Click HERE to Download with the entire document in one pdf file.
Sample Page of the State Listings in the Devices and Dates:
