anyone have a genealogy of providers?

does anyone know of a concise genealogy of providers since 1990 (e.g., GTE + BBN begat GTE Internetworking; GTEI absorbed Genuity; GTE + BBN + Genuity + ... => Verizon; by ASes even better but we can do the mappings if needed) we're trying to integrate a little more semantic sanity to presentations of macroscopic infrastructure growth over time (notwithstanding the fact that semantic sanity in this space is a losing battle) and it would sure help to have the metabolic process codified in a single source. pointers muchly appreciated, k