Here is a guide that shows the locations of all the Penny Dreadful books in Red Dead Redemption 2.
Red Dead Redemption 2: Where to Find Penny Dreadful for Jack
Where To Find Jack's Penny Dreadful Book In RDR2
PENNY DREADFUL ERROR? : r/RDR2
Item Requests Guide
Blackjack O'Hare (Earth. 616). Marvel Database
Where To Find Jack's Penny Dreadful Book In RDR2
Where To Find Jack's Penny Dreadful Book In RDR2
Item Requests Guide
Red Dead Redemption 2 Penny Dreadful – Where to Find - GameRevolution
Where To Find Jack's Penny Dreadful Book In RDR2
PLAŠKI – a magnificent and forgotten Francopan fortress
Red Dead Redemption 2 Trophy Guide & Roadmap