Keywords, restricted vocabularies (RVs), thesauri, and catalogues are introduced leading up to discussion of the need for full ontologies to describe the full logical and relational structure of e-InformationObjects (e-IOs) (data or docs). A re-ordered and (re-) structured NEFIS RV for Forest Inventory and Mensuration (FIM) is (re-)presented, leading on to the description of a new outline ontology for FIM. The fundamental problem of data incompatibility Forest Information Systems is (re-)stated and the need for a Forest Standards Conversion Toolkit is (FSCTK) highlighted. FIM ontologies will aid not only in the discovery of e-IOs on the www, but will help to guide the analystical use of the FSCTK, possibly as a webservice from the Forest Model Archive (FMA).