Tapestry
Is a This Era tapestry card still active during the civilization step of your income turn, before you play the new one?
The designer and publisher both said the era begins at the start of the income turn, and the rulebook matches.
No. A this-era card applies until the start of your next income turn, and the new era begins at the start of that turn, so the old card is inactive during the civilization step. The rulebook's Income section gives the same timing.