Many area businesses will be closed on Monday, Jan. 18, in observance of Martin Luther King Jr. Day. All city and county offices, the Holbrook and Winslow post offices, Northland Pioneer College, the Holbrook Schools, the Joseph City Schools, the Winslow Schools, the Holbrook and Winslow senior citizens centers, Wells Fargo Bank and Bank of the West will be closed. The Tribune-News office will be open.