Telephone Exchanges

 Katz & Besthoff Drugs
Almost any New Orleanian could probably identify the origin of this blotter, even if the store's name were not visible; to people born and raised in New Orleans, this shade of purple meant only one thing: K & B. The first K & B--or Katz & Besthoff--drug store opened in 1905 at 732 Canal Street; the second four years later, and from there, the chain continued to multiply until the city and its surrounding communities were dotted with dozens of K & B purple signs. In 1997, to the chagrin of many in New Orleans, K & B was sold to Rite-Aid, and the familiar purple vanished from the streets.
Image & text source: http://nutrias.org/~nopl/monthly/jan2001/jan015.htm

Click Here for the New Orleans Public Library's ' New Orleans Telephone Exchanges Through the Years'