People out and about and looking like they are mostly having fun. American. Rutherford Boyd, illustrator and artist. Living from 1882 to 1951, he studied art at the Pennsylvania Academy of the Fine Arts.

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“Leggett’s.” ca. 1925. Mixed media on paper. Signed. © Estate of the artist. Image © Papillon Gallery. Fair use license. via http://www.papillongallery.com/john_rutherford_boyd.html
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“Beach Umbrellas and Bathers.” 20th c. Watercolor and pencil on paper. © Estate of the artist. Image ©2020 Artnet Worldwide Corporation. Fair use license. via http://www.artnet.com/artists/rutherford-boyd/beach-umbrellas-and-bathers-2m3-b4msE_kPVOciu8i6Og2
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Three male window dressers putting lingerie on a female mannequin. 20th c. © Estate of the artist. Image © William Smith Auctions, Sarasota, and Auction Zip 2003 – 2020. Fair use license. via https://www.auctionzip.com/auction-lot/John-Rutherford-Boyd,-Illustrator-Am.-1884-1951_6E44DB1B12/