What dates do you put on this carbro Autotype booklet from England?

[DDTJRAC]

I will post the whole booklet online when I can get a date estimate. I always try to include dates in the file names if I can. It is not easy to change the file names once uploaded to the Internet Archive. If no date estimate, then will upload without date.

 

[koraks]

I'd expect around 1935. There's no lead to be found online about the title?
There's a wikipedia about the carbro process that mentions this company; maybe that's a start?

 

[Raghu Kuvempunagar]

From https://www.britishmuseum.org/collection/term/BIOG17914

"In 1919 bought the right to the Carbro process (carbon prints made from bromide prints), which became popular in the 1920/30s."

From https://filmcolors.org/timeline-entry/39157/#:~:text=Autotype Trichrome Carbro, year 1921 – 1953,,photography, invented by HF Farmer, Autotype Company.

Autotype Trichrome Carbro Year 1921 – 1953
​

An article from 1938 on the same subject: https://web.archive.org/web/2017042...sold.com/articles21/color-photography-3.shtml

These might not be very useful for your purposes, but gives a rough idea of the time period.

 

[Europan]

1930

 

[DDTJRAC]

Thanks for all the replies. I will list it as the 1930s.