Amish Church hasn't changed much in the past 100 years.
However, there are some changes. In 1921 the meeting would have been held inside the farmhouse. In this photo, taken on 7/18/21 the service is being held inside the white pole building just beyond the buggies.
If you notice, a strip of tin siding has been removed for the purpose of letting air move through the building. This is important for a crowd of people meeting on a hot July day in Iowa. Keep in mind, no air-conditioning, no fans.
The men gather in a circle near the barn or under a shade tree until it seems everyone has arrived. They head inside the building, single file, in order of age, eldest first. Once the men and boys have all been seated on the men's side. The women and girls begin to file in and take seats on the women's side in order of age.
Services will last until around noon. Everyone will file out in reverse order. The men will gather in their circle and visit quietly. Older boys will form a circle of their own and compare notes from last week's adventures on their own farms. Little boys might step inside the barn to look at a newborn calf or colt.
The women will help the host housewife bring out the meal into the pole barn which the young men have converted into a cafeteria after the morning service ended.
Everything is done in a very orderly and peaceful way. The men return inside and take seats for the meal. Plenty of pickles and cheese are likely. Homemade bread and with the Amish specialty Peanut Butter with Karo syrup mixed into a perfectly creamy consistency. After the meal, the men and older boys gather their family horses and hitch them to the buggy. They stop by and pick up the women and little children and return to their own farms for a quiet Sunday afternoon. Chore time will come soon.