The board recognized that conflicts among contemporaneous documents and statements raised concern about the management of the public presentation of facts on the Iran initiative.

Not much is known about the details of the commission; no contemporaneous documents naming the altar-piece's patron(s) have been found.

In his posthumously published memoirs Brüning claims, without support of contemporaneous documents, that he hit upon a last-ditch solution to prevent Hitler from taking power-restoring the Hohenzollern monarchy.

However, according to a number of contemporaneous documents, Menkauhor ... probably completed [his] pyramid elsewhere, in North Saqqara or Dahshur.

Nevertheless it is counted in some contemporaneous documents among the Imperial Free Cities.

It is also said that after the prisoner camps were dissolved in 1918, Freisler became a convinced Communist, though this is not supported by any contemporaneous documents.

He is described in contemporaneous documents as a "capper".

"We have noted the considerable lack of contemporaneous documents corroborating the concerns they raised," it said.

Keys uses tree-ring samples, analysis of lake deposits and ice cores, as well as contemporaneous documents to bolster his speculative thesis.

"Nothing like a contemporaneous document to corroborate testimony."