Yes, dry mustard can safely be used as a substitute for mustard seed. However, it may make the brine cloudier than mustard seed and may alter the flavor.   1 teaspoon mustard seeds = 1Â½ teaspoons dry mustard.
Humeston is a city in Wayne County, Iowa, United States. The population was 494 in the 2010 census, a decline from 542 in the 2000 census.
Ninnekah is located in an agricultural region, and farm equipment is manufactured in the community. Between 1909 and 1919 the town had an estimated four hundred inhabitants. The first federal census for Ninnekah reported 1,941 residents in 1930. The town's population declined from 1,085 in 1980 to 994 in 2000.