100 Books to Find on a Cleric’s Bookshelf and 100 Things to Find in a Fantasy Alley (PFRPG) are now available buy on DriveThruRPG and 100 Rumours for Wraith: The Oblivion is available on Storytellers Vault.
Whilst books can be valuable and useful, not every book is such. 100 Books to Find on a Cleric’s Bookshelf has books on subjects of interest to clerics to flesh out a bookshelf.
Alleys are small roads and paths where things can accumulate. 100 Things to Find in a Fantasy Alley (PFRPG) has 100 things to see in a fantasy alley, ranging from the odd to the disturbing. This is a conversion of the original supplement to Pathfinder. You do not need both versions.
Wraiths, even though now dead, may still hear various rumours, and 100 Rumours for Wraith: The Oblivion has 100 such to hear. They can be used as background colour, misinformation and adventure hooks.