Claude
The cachet features a black-and-white pen-and-ink aerial illustration of Fort Des Moines No. 1 (1834-1887), depicting farm fields, buildings, and surrounding landscape. The stamp is the 5-cent Johnny Appleseed commemorative (Scott #1317) showing a figure standing before a large red apple. Two cancellations are present: a blue circular hand cancel reading 'Trans-Mississippi Philatelic Society, Des Moines Iowa, Oct 7 1966' and a pink/magenta circular auxiliary cancel reading 'Fort Des Moines, Iowa, Oct 7.' A machine cancel reads 'Convention Station, Hotel Fort Des Moines.' The insert card (image 2) provides historical text about 'The First Fort Des Moines.'
Mistral
The cachet features a detailed black-and-white pen-and-ink aerial illustration of historic Fort Des Moines No. 1 (1834-1837), showing farm fields, period buildings, and surrounding landscape. The stamp is the 5-cent Johnny Appleseed commemorative (Scott #1317), depicting Johnny Appleseed in color with a red apple and green leaves. The postmark includes a circular blue 'Trans-Mississippi Philatelic Society' hand cancel and a magenta 'Fort Des Moines, Iowa' auxiliary cancel, both dated October 7, 1966. Additional printed text provides historical context about Fort Des Moines. The cover is in excellent condition.
(The automatic summaries sometimes misidentify the postmark as part of the cachet artwork.)