The King in Yellow [Robert W. Chambers] (English, 1895)

The King in Yellow - https://en.wikipedia.org/wiki/The_King_in_Yellow

Remember our Promise.

Decided, however belatedly, to start reading this. Project Gutenberg has free, legal copies.

Was jumpscared by future predictions of 1920 that look like an unusual Victoria 3 play through, and:

We had profited well by the latest treaties with France and England; the exclusion of foreign-born Jews as a measure of self-preservation...