The International Consortium of Investigative Journalists on Monday published a searchable database of almost 320,000 offshore entities culled from 11.5 million documents that were leaked last month from the Panamanian law firm Mossack Fonseca.

But while the disclosures contain the names of dozens of notable law firms from around the world—mostly acting as advisers, trustees or intermediaries between Mossack Fonseca and its clientele—internal emails and other source materials remain out of public view for now.