SCP foundation Class D Postcard for Sale by Jack O TV

SCP Foundation - Wikipedia

SCP class logos Scp, Scp cb, Scp 049

SCP ACS Diagram (I saw another one somewhere on here, but it didn't have all the info I wanted, so I made a more accurate, but uglier version) : r/ SCP

Classes Project: SCP Wiki

SCP Poster Remember: D-class Are Also People

Object Classes, SCP Foundation Archives Wiki

Anomaly Classification System ACS

Thaumiel-Class Entities of the SCP Foundation - Tim Kane Books

SCP FOUNDATION: Entity Classification by foundation, scp

Euclid Classification Scp Foundation Secure Contain Protect Shirt - TeeUni