Sanderson, Dr. Dorothy (1998). Cross-Border Mail: Canada — United States of America 1800-1860.

Cross-Border Mail: Canada — United States of America 1800-1860, Dr. Dorothy Sanderson, 1998, Cerlox bound, 136 pages, 8.5 × 11, black and white, Stock # B4h923-007, Price: $C19.00

The first half of the exhibit presents covers going from Canada to the US; the second half shows covers going to Canada from the US, including cross-border postal markings. Mail in both directions included in this work dates between 1800 to the 1860s. Each entry is illustrated and fully explained as to markings and rates. A great, illustrated introduction to the history of early trans-border mail. (ABE Books)