Innovators of the 19th Century ShadowsSize: 17Difficulty: mediumForgotten Inventors of the 19th CenturyModerate difficulty suitable for most players
Hidden Geniuses of 19th Century InnovationSize: 17Difficulty: mediumForgotten Inventors of the 19th CenturyModerate difficulty suitable for most players
Invisible Minds Behind 19th Century InnovationSize: 9Difficulty: mediumForgotten Inventors of the 19th CenturyModerate difficulty suitable for most players
19th Century Pioneers of InnovationSize: 8Difficulty: mediumForgotten Inventors of the 19th CenturyModerate difficulty suitable for most players
Obscure Geniuses of Industrial InnovationSize: 11Difficulty: hardForgotten Inventors of the 19th CenturyChallenging puzzle for experienced crossword solvers