(If you have an unanswered question from the previous thread, please post it again.)
From "A Godly Heritage" (written by six theologians, historians, and such, along with two pastors of Apostolic Lutheran Churches):
The OALC was founded in 1903 in Calumet and has stayed separate from the other groups since then. There have been no major spits in this group, and the Heidemen, ALC, and all the other splinter groups have nothing to do with the OALC, since they split off in 1903. It's the biggest Apostolic group -- having around 10,000 members.
The OALC book ("History of Living Christianity" written by a committee of OALC members in 1974) says that Andrew Brenner, a Finn from Hammerfest, Norway was the first in the US to preach the true word. He arrived in Calumet around 1867. He sent a ticket to his friend Solomen Korteniemi to come help spread the word -- big trouble followed! In 1872 the first Apostolic congregation was formed, called the Solomon Korteniemi Lutheran Society.
There was so much fighting going on that the Elders sent Henry Parkajoki and Aapo Tapani to Calumet to calm things down. Arguing increased, so in 1877 John Takkinen and Frans Niska from Oulu, Finland were sent. Takkinen was a force to be reckoned with, it was said he ruled with an iron hand, just as Korteniemi was doing. Both had fiery tempers and from what I can understand, much of the dissension in the Apostolic congregation was as much a result of these two personalities as anything else.
Takkinen's side accused Korteniemi of drinking and spreading lies. In 1879 the church name was changed from "Solomon Korteniemi Lutheran Society" to "Finnish Apostolic Lutheran Congregation". Takkinen became part of a publishing company around 1880, and produced an Aapinen in which the words "descended into hell in Gethsemane" were inserted. That made people mad, saying things like, "Who does he think he is? Even Luther hadn't changed any words in the Apostles Creed." (I understand that today the only group that uses the altered creed is the OALC in America. It isn't used in Finland.)
The Elders continued to send other preachers to try to reconcile the Apostolics. Some of the preachers who were sent were Henry Berg, John Mullo, Peter Stolberg, Eliel Juola, and John Rovanpaa. These men were all considered by Takkinen's followers as false teachers. Takkinen was voted out of the Apostolic Lutheran Church on Pine Street. He and his group built a new church in 1892 and called it the "Finnish Laestadian Lutheran Sunday School and Mission Society". John Raattamaa was still the leader of the Apostolics in Scandinavia. He wrote to Takkinen and advised him to change the name to the Old Finnish Apostolic Lutheran Congregation (later tweaked to Old Apostolic Lutheran Church)---and tra-la the OALC was born.)
Under Takkinen's leadership the services were simplified. They quit standing for the Apostles Creed and kneeling during the general confession of sins, which had been done by the congregation in unison. Organs were no longer used, and taking oaths and making the sign of the cross at baptisms was eliminated. An alter railing was added for communion. The ministers didn't wear vestments. The service usually was two hours long, with hymn singing and mostly preaching.