Sailing the ocean blue back before everyone caught a plane. Posters from various steamer lines that were mostly on the North Atlantic run.

"Welcome on Board." Swedish America Line. Date unknown.
“Welcome on Board.” Swedish America Line. Date unknown. Isacsons, Gothenburg. Feder. Image © Swann Auction Galleries Inc, New York. Fair use license. via https://catalogue.swanngalleries.com/asp/fullCatalogue.asp?salelot=2498++++++85+&refno=++752350&saletype=
Lloyd Express/North German Lloyd Bremen. 1929.
Lloyd Express/North German Lloyd Bremen. 1929. Lois Gaigg, illustrator (1905-1944). In the public domain in the United States because the maker has been dead over 70 years. via https://www.etsy.com/listing/240846066/lloyd-express-fastest-transatlantic?ga_order=most_relevant&ga_search_type=all&ga_view_type=gallery&ga
Nach Amerika/White Star Line. ca. 1930.
Nach Amerika/White Star Line. ca. 1930. Ottomar Anton, illustratir (1905-1976). Langebartels & Jurgens, Altona. Image © Swann Auction Galleries, New York. Fair use license. via https://catalogue.swanngalleries.com/asp/fullCatalogue.asp?salelot=2498++++++86+&refno=++751789&saletype=