When Maggie hands Emma Jake's birth certificate at the top it says State of Nebraska and stamped in the upper left corner it says City of Ladora. Ladora is in Iowa, not Nebraska.
There actually used to be a Ladora in Nebraska. It was the county seat of Blaine county before Brewster. The first post office was established there, when it was actually in Sioux county. The post office and actual county seat changed back and forth between Ladora and Brewster several times before Brewster was finally chosen as the permanent county seat in 1887 and the permanent site of the post office in 1888. There was also a newspaper named The Ladora Independent in Ladora, established in 1887. In 2010 there were only 478 people in all of Blaine county.
The Clark candy bars seen at the start (at around 25 mins) have modern plastic wrappers with barcodes.
The preferred cigarette smoked during the movie by Maggie was Scorl in the red pack (at around 20 mins), however upon close examination with the various smokers including Maggie, most of the cigarette's have a distinctive black eagle near the filter which is trade mark for the company American Spirit which was founded in 1981.