 For example, around 1860, Joseph "Diamond Jo" Reynolds moved to McGregor in order to establish a grain trading business, and later ran his own steam packets.More railroads were built to connect McGregor with cities further west, and the city of North McGregor (now Marquette, Iowa) was established just north of the city to serve as the city's railroad terminus.After reaching McGregor from the west, trains were disassembled and railroad cars were ferried across the Mississippi to continue on towards Lake Michigan.