The scene of the rooms, post office, Dr Bakers office just before Albert sees Dr Baker is the same scene in which Nellie tells her mother she is pregnant.
Little Grace is nowhere to be seen during the football match. It doesn't explain who is taking care of her.
The boys are shown using the football huddle. This episode is set sometime in the 1880s, and the huddle was invented in 1892 by the Gallaudet University football team, to prevent anyone on the opposing teams who was proficient in American Sign Language from eavesdropping on them.