The Hotel Alder sign is probably from the 1950s or earlier. [map]

The Aida Plaza Hotel was built in 1912 as the Federal Hotel. The text at the top of this sign appears modern. I don't know how long ago the name was changed or if there was another name before it became the Aida. This sign appears to be from the 1950s or earlier. For more, see this website. [map]

The Latin American Club opened in 1993. However, the sign appears older than that. It was probably repurposed and may have been repainted at that time. For more, see this website. [map]

The Astor Hotel sign was built by 1941. It was originally a projecting sign that was located a few doors away. By 1959, the sign was adapted for the Madonna Residence and read "The" at the top and "Madonna" vertically. At some point, the sign was moved to its current location, where it was installed on the side of the building, and was repainted for the Abigail Hotel. During a restoration effort in 2022, porcelain enamel panels were discovered underneath. The sign was restored by Jim Rizzo of Neon Works. The project was part of the Tenderloin Neon A-Z initiative to restore neighborhood signs, coordinated by SF Neon and the Tenderloin Museum. [map]