You can try this approach if you are adept with a tool like Illustrator or Inkscape.
Find a close font, perhaps like this: https://www.linotype.com/185452/itc-conduit-light-product.html
Buy the font, or type the alphabet into the sample text, grab the bitmap at high resolution, trace bitmap in the tool to vectorize it.
Adjust each letter on top of a scan of your text until it exactly matches. Place all letters on top of the scan.