An advertising postcard from the ’40s promoting Granger pipe tobacco. The card may have been a magazine insert, given that the bottom edge is serrated.
Native American children are the subject of this comic linen postcard from Colourpicture.
Greetings from the Indian Country of the Great Southwest. On the back:
THE GREAT SOUTHWEST
The last stand of the American Indian
Populous tribes of either peaceful or warlike original inhabitants of the Southwest who once roamed this vast desert and mountainous area, are now conquered and confined to reservations.
The state checked contains the following tribes:
ARIZONA: Navajo, Hopi, Havasupi, Hualapai, Mohave, Tonto, Yuma, Apache, Pima, Papago.
NEW MEXICO: Navajo, Zuni, Acoma, Laguna, Isleta, Sandia, Santa Ana, Zia, Jemez, San Felipe, San Domingo, Cochiti, Tesuque, Santa Clara, San Juan, Taos and Apache.
Seminole Indians learning the art of alligator wrestling at Musa Isle. On the back:
MUSA ISLE
Home Of The Seminole Indian
N. W. 25th Ave. & 16th St. Miami, Fla.
The Alligator hide is an Important Source of Livelihood to the Seminoles. They Are Taught from Childhood to Stalk and Capture these Saurians. Exhibition Alligator Wrestling
Hourly From 9 A.M. to 6 P.M.
This real photo postcard probably dates from around 1930. Written on the back: “Me and a friend on a date.”
Published by Sandoval News Service in El Paso, Texas, this suggestive linen card was printed by Curt Teich.
Mailed in July of 1908, this humorous scene appears to have been mailed from Rosenberg, Illinois to Fort Worth, Texas in July of 1908. The recipient was an Essie Easterwood who lived at 2423 Bryan (or Bryant) Ave., and a quick bit of searching 
suggests that Essie (full name Mattie Essie Easterwood) may have lived from 1892 to 1976 and had a daughter who passed in 2013. The photo at right shows Essie, year unknown. Written on the back of the card:
“Hello Bill -
Well walk up and write to your old friend. What is the matter with the girl. I have not received a letter from any one in two or three weeks.”
Just a friendly reminder to shame someone back into Sunday School, this postcard has printed on the back:
Sunday School
Dear Warren [name hand-written on blank line]
Things seem not quite right when you are away. If you are ill, or there is any other reason that you cannot come, please let us hear from you.
A linen postcard view of the Fort Worth Art Center in Ft. Worth, Texas. Opened in 1954, it would later be renamed the Fort Worth Art Museum, only to be renamed yet again to the Modern Art Museum of Fort Worth.
Published by the Trinity News Co., this linen postcard gives an overview of the stock yards in Fort Worth, Texas. On the back:
Sprawled over this 80 acre tract is the multi-million dollar business that gave to Fort Worth its nickname of ‘Cowtown’. It is the largest meat packing center in the South.