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.
Manning is a city in Carroll County, Iowa, United States, along Iowa Highway 141. The population was 1,500 at the 2010 census. It is named for Orlando Harrison Manning, a Lieutenant Governor of Iowa.[4]