Hi Carrie! This is probably lettering. Each shape is unique. There may have been a template in use, but no specific font. There were many slab serif typefaces in the early 1900s with similar odd shapes for ‘K’ and ‘G’, as well as a mix of bracketed and non-bracketed serifs (such as Foster), but nothing digital that is closer than these:
Rockwell
Karnak
Memphis

Beton