Pictured in the lower right image, we dug a 3' deep, 16" wide, 24" long footer under the north eastern corner of the porch (south eastern corner of the 1950's portion), which has sunk about 3" since the porch was poured in the 1970's.
The other three images show completion of the footing poured with the help of friends and family last summer. It now wraps fully around the southern wall of the 1890's portion of the house and comes underneath the porch.
The house is level, though we are leaving the porch out of level. We may complete the foundation on the eastern wall of the 1950's portion, but for now, having it level and stable before doing interior work is the primary goal.
Josh: Founder, father