| for help with |
| Tim Harding | British and Irish players and events |
| Walter Chan | Numerous players and events: wordwide, including women's events |
| Alan McGowan | British and European players and events, especially Scottish and German |
| batgirl (a.k.a. Sarah Beth) | Numerous players and events, via her chess blogs and personal communications |
| Michael Kühl | Numerous players and events; European and American |
| Steve Mann | Yorkshire and Sheffield players and events |
| Barak Saltz | Numerous players and events, American and European |
| Geert Van der Wulp | Russian players and events from Shakhmatniy Listok |
| Fabrizio Zavatarelli | Italian and British players and events |
| Gerard Killoran | British players and events |
| Edward Winter | Numerous players and events, via Chess Notes and personal communications |
| David Cohen | Canadian players and events |
| Eric Malmsten | Canadian players and events |
| David McAlister | Irish players and events |
| Eduardo Bauzá Mercére | American players and events |
| Tom Stokoe | Yorkshire events involving his ancestor, Thomas Y. Stokoe, as well as my banner photo |
| Dominique Thimognier | French players and events |
| Joost van Winsen | New York events |
| Ryerson Binning | New York events |
| Tom Teague | Biographical information on his ancestor, Nelson Fedden |
| Stephen Davies | American events in which S. Lipschütz played |
| Günter Brunold | German and British events |
| Paul Brown | Miscellaneous players and events |
| Tom Robillard | de la Bourdonnais - Perigal |
| Hans Renette | Various British and European players |
| Paul Dunn | Australian players and events |
| Tony Gillam | Miscellaneous players and events |
| Vlastimil Fiala | Czech players |
| Tomis Chagall | Czech, German, and other players and events |
| Nick Pope | American players and events |
| John Saunders | P.W. Fairweather |
| Richard James | P.W. Fairweather |
| Yandy Rojas | Events involving Capablanca |
| Massimiliano Enzo Maria Orsi | Italian players and events |
| Thomas Lemanczyk | Various players |
| Pierre Bourget | Semmering 1936 Ladies' Tournament |
| Frederic Fournier | Birthdate of de la Bourdonnais |
| Jorge Magioncalda | Mar del Plata 1928 |
| Philip Jurgens | Miscellaneous players and events |
| Larry Kaufmann | Rating effects of handicaps |
| Jan Kersten | European players and events, especially Dutch |
| Frank Hoppe | German players |
| Ralf Hemberger | German, Austrian, and British players and events |
| Sergey Vetyugov | Euwe-Spielmann 1935 |
| Bill Wilson | New Zealand players and events |
