i) <13.Bc4 Bd7 14.Nge2 a5> against the TB's <13.Bc4 a5 14.Nge2 Bd7>;

ii) <24...Nb6 25.Bxe6 Qxe6 26.f3 c4 27.Kb1 a4> against <24...a4 25.Kb1 Nb6 26.Bxe6 Qxe6 27.f3 c4>;

iii) <34.Qc5 Rf7 35.Rhe1 Rc8 36.Qe3 Qa6 37.Ka1 Rb7 38.Qxe5 Rb5 39.Qd4 Ne6 40.Qd7 Rb6 41.Ne4 Rf8> against <34.Rhe1 Rf7 35.Qc5 Qa6 36.Ka1 Rb7 37.Qxe5 Rb5 38.Qd4 Ne6 39.Qd7 Rb6 40.Ne4 Rf8>.

Note that the current version has an extra move, because White plays Qe3 and Black, Rc8, so the tournament book score only has 45 moves.

https://database.chessbase.com/

https://secure.newinchess.com/NICBase

I wasn't able to find the game on <CB>, but <NIC> seems to have it, and their version seemed to match up with <CG> (but please doublecheck me).

I seem to recall that NIC had a more extensive presence in the past - and that <CG> was often using it for games in the early tournaments I explored for <Z-base>.

But most of the work, for historical purposes, can be done.

<H.R. - We agree with you and other subscribers to the International Chess Meeting that the sooner the committee rescind their very impolitic prohibition against the publication of the games the better. If the association have any copyright in the games, then their publication in a collected form will require the sanction of every member of the society. If they have none, as we believe, then any one has a right to publish them. The proper course for the committee is to supply the chief papers in England which devote space to chess with copies of the most important games. By this means the subscribers to the prizes who have no opportunity of witnessing the combats may derive the next gratification, that of playing them over at home. According to the present absurd arrangement, as the foreign competitors duly forward the best games to the chess organs of their respective countries, the persons who alone have a chance of seeing them, while there is much interest attached to them, are just those who never contributed a sixpence towards their production.>

Harding's book on Steinitz, p.38:

<The whole Congress was fairly well, but not entirely satisfactorily, documented in an official tournament book that was edited principally by its chief organizer, and designated below as <Lowenthal>. Its publication was delayed until 1864, due in part to a dispute concerning the judging of the international problem composing tourney, but also because (according to Boden) of the incorrect notation of some foreigners' games, necessitating writing far and wide for accurate records of them. The international tournament was also reported in a book edited by a Berlin master, in German, and designated below as <Suhle>. Both books contain the same set of games.>