What are the Extant Manuscripts of the Hadith collection: Sahifah Hammam?

This hadith book currently bears the crown of being the "earliest extant hadith book" so its important to verify if what we have today it is actually authentically traced to Imam Ibn Munabbih. In general, I think verifying the authentic transmission of a document is done by two: 1.) Analysing all of the current manuscripts and their chains of transmission 2.) Analysing other documents that mention the document of interest. (i think Imam Ibn Abi Shaybah mentioned the sahifah hammam. I read that somewhere) beyond that, I am not sure what else we can even do. To that end, what are the current manuscripts of the Sahifah Hammam we have available to us today? (and where are they and mention their chains of transmissions etc please)