Extra Credit Questions

[LincolnMan]

According to one author, a sign of success during Lincoln's time was partly indicated by how many windows a person had in his residence. The author then gives the count of windows Lincoln had in his Springfield home (after the addition). Based on the count, the author states Lincoln had achieved a level of success that many had not. The question for this trivia thread is: How many windows were there? It will be a bonus if anyone guesses the author and book I found this bit of info in.