Landscapes by artist Alfredo Müller who lived from 1869 to 1939. Swiss from a Franco-Italian background.

Alfredo-Muller-Landscape
Landscape. 1914. Image © wahooart.com. Artwork itself in the public domain due to age. via https://en.wahooart.com/@@/AQSUYD-Alfredo-M%C3%BCller-Landscape
"La Grande Cascade de Saint Cloud." 1905. Signed by the artist in pencil on the lower right and numbered "39" in pencil on the lower left. Title in pencil on the back. Published by Edmund Sagot, Paris, his dry stamp lower right below signature.
“La Grande Cascade de Saint Cloud.” 1905. Signed by the artist in pencil on the lower right and numbered “39” in pencil on the lower left. Title in pencil on the back. Published by Edmund Sagot, Paris, his dry stamp lower right below signature. Image © 1stdibs, Inc. 2020. Fair use license. via https://www.1stdibs.com/art/prints-works-on-paper/alfredo-muller-la-grande-cascade-de-saint-cloud/id-a_51859/?utm_source=pinterest&utm_medium=cpc
Alfredo-Muller-A-Rocky-Landscape
“A Rocky Landscape.” 1914. Image © WahooArt.com. Artwork itself in the public domain due to age. via https://en.wahooart.com/@@/AQSUYF-Alfredo-M%C3%BCller-A-Rocky-Landscape