You can see the contents Google doesn't display for No-US-users (time period 1868-1922, moving wall) by using an US Proxy.

You can use a webbased anonymizer service like https://www.proxyking.com . Other such links see

https://proxy.org/cgi_proxies.shtml

Please take into account that most such services have download limitations making it impossible to download large Google's PDFs.

(There is some evidence that https://www.unbeatable.in has a 29,5 MB limitation, https://w2.hidemyass.com/ 25 MB )

Or you can install with a few clicks in your browser an US Proxy (find a proxy IP and port with e.g.
https://www.google.com/search?q=free+proxy ).

See https://en.wikipedia.org/wiki/Open_proxies

Please note that it may be helpful to change to "Basic HTML mode" to see the pages!

See also:
https://www.medievalgenealogy.org.uk/google.shtml#outsideusa
https://archiv.twoday.net/stories/2922570/

[Update: Screencast https://archiv.twoday.net/stories/6067526/ ]