I am not sure what exactly you want sourced but I'll try my best.
I have pages from History of LaPorte County (p. 756-758) bio'ing John N. McCurdy, a son of John & Rhoda (Lucas) McCurdy.It mentions his brother Frank who John N. went into business with - Frank was a station agent for the railroad but they began dealing in grain and general produce.According to this John N & Frank's father, John, lived until 1891 and died in St. Joseph County.
Rhoda's father was Francis Lucas and she is mentioned in his will in Warren Co., OH probated in 1843.There isn't any other McCurdy family in the LaPorte area.Looking through other McCurdy posts, I noticed that other researchers have a Henry & Anna/Hanna (McCurdy) Meeker of Warren Co., OH moved in LaPorte Co., IN.(Rhoda Lucas' brother, Daniel married a Hannah Meeker as his 1st wife.)
I was in contact with a McCurdy-Lucas researcher, Marilyn, about 10-17 years ago who has since passed away.I'll look through the notes she sent me.Another McCurdy researcher who I found a week ago, said she found a letter that Marilyn wrote to Porter Co., IN - probably 15-20 years ago.This newly found McCurdy researcher is Jean and can be found on the Porter Co., IN Message board on the other major Message Board (rootsweb)and keyword search for McCurdy.
What siblings of Francis am I not coordinated with other researchers?