estrick: Blackburne also played 9. Bg5 in an eight game simultaneous blindfold exhibition eight years later.
Blackburne vs J N Burt, 1888
Blackburne was apparently quite pleased with both of these games, as evidenced by his inclusion of them in his volume of Selected Games. In his comments about this game with Wilson, Blackburne notes, "...the opening of this game bears a curious resemblance to the well-known game of mine with Mr. Burt."
In his annotations he states that 10. ...f6 is Black's best defense.
Morphy played 9. Qe2 against Anderssen in 1858, but Blackburne was either unfamiliar with that game, or believed that 9. Bg5 led to a more decisive win, not being aware of Black's resource on the 10th move.
Morphy vs Anderssen, 1858