In both images, produce is stored in an attic. Red peppers, turnips, corn, beets, carrots, and what looks like red onions hang from the rafters. A sack of potatoes, a basket of fruit (including bananas!), cauliflower, grapes, a lone cucumber, a few nuts, and two fat pumpkins sit on the wooden floor.
In the first image, a white placard with the United States Food Administration seal on the bottom admonishes "Eat less, and let us be thankful that we have enough to share with those who fight for freedom." Much of the propaganda around food and the First World War admonished self-restraint when it came to food. Although the phrase "eat less" has had some controversy in the modern era, in the 1910s it was far less about ideal bodyweight (although that played a role) and far more about reducing waste. As the poor wheat harvests in 1916 and 1917 did not allow for normal consumption levels AND exporting to the Allies, most of the rhetoric in 1917 and 1918 was focused on reducing waste, refocusing American eating habits on other types of food, and reducing consumption in general. For instance, while messages of "eat less" were common, so was the Gospel of the Clean Plate, which exhorted Americans not to waste food.
Although the Library of Congress has no other posters attributed to "A. Hendee," I've managed to track her - yes her! - down, thanks to a clue post from a UK museum that found her full maiden name. Alice Julia Hendee, later Alice Hendee Price, was born in 1889, possibly in Kanas as she attended the Kansas City Art Institute before moving to New York to attend the National Academy of Design and the New York School of Fine and Applied Arts. In 1917 she was listed in a city directory as living on the Upper West Side, and in 1923 she moved to Bronxville, NY in Westchester County. At some point she married architect and illustrator Chester A. Price. Alice made the local news quite frequently for her art, and by 1950 was teaching classes to area women.
And this Thanksgiving, although we no longer need to curtail our eating habits for wartime, the message of being thankful for what we have and sharing with others is a timeless one. Have a lovely Thanksgiving, everyone, whether you're celebrating with family or friends, and I hope you can enjoy all the bounty of the season.