Dennis LaRue travels back to the Romantic chess era with Paul Morphy. See one game where the legend Morphy offered the b4 pawn and one game where he captured the b4 pawn (etiquette, you know).
2017.01.10
Napoleon Marache vs Paul Morphy, New (1857): C52 Evans gambit
http://www.chessgames.com/perl/chessgame?gid=1227720
Paul Morphy vs Jules Arnous de Riviere, Paris (1863): C51 Evans gambit
http://www.chessgames.com/perl/chessgame?gid=1227799