Claude
The Tudor House cachet features a red/rose-colored portrait sketch of Louis Sullivan (bearded, balding) in the upper left, with a detailed black ink architectural drawing of the National Farmers' Bank in Owatonna, Minnesota below. The stamp is an 18-cent Architecture USA issue depicting the Bank of Owatonna facade in dark engraved style, with red denomination text. The postmark is a standard machine cancellation from Washington, DC dated August 28, 1981. The cover is in excellent, clean condition with the text 'Louis Sullivan 1856-1924' handwritten in script at the bottom.
Mistral
The cachet features a rose-colored portrait sketch of Louis Sullivan (1856–1924) alongside a black-and-white architectural drawing of the National Farmers' Bank in Owatonna, Minnesota. The stamp, Scott #1931, depicts the bank's facade in a detailed engraved style, with text indicating 'Louis Sullivan, 1856-1924, Bank, Owatonna, Minn' and 'Architecture USA 18c'. The postmark is a circular machine cancellation with the date 'AUG 28 1981' and location 'WASHINGTON, DC 20013'. The cover is in good condition with clear artwork and legible text.
(The automatic summaries sometimes misidentify the postmark as part of the cachet artwork.)
