Bakers
2051--Bakeries--Bread, Cake, and Related Products
2052--Bakeries--Cookies and Crackers
2053--Bakeries--Frozen Bakery Products, Except Bread
5461--Bakeries--Retail

Bakers' Equipment and Supplies
5063--Electrical Apparatus and Equipment

Balloon Operations
4581--Airports, Flying Fields and Services
7999--Amusement and Recreation Services--NEC

Ballparks
7941--Athletic Field Operations

Ballrooms
7911-Ballroom Operations

Banks
6011--Banks--Federal Reserve
6021--Banks--Commercial, National
6022--Banks--Commercial, State
6029--Banks--Commercial, Not Chartered
6035--Banks--Savings--Federal
6036--Banks--Savings--Not Federally Chartered
6111--Banks--for Cooperatives

Barber Shops
7241--Barber Shops

Bars
5812--Eating Places
5813--Drinking Places

Batteries
5013--Batteries, Automotive--Wholesale
5531--Auto and Home Supply Stores

Beauty Schools
7231--Beauty Schools

Beauty Shops
7231--Beauty Shops

Bed and Breakfast Inns
7011--Hotels and Motels

Beer and Ale Dealers
5181--Beer and Ale Wholesale
5921--Liquor Stores

Beer and Ale Distributors
5181--Beer and Ale

Beverage Distributors
5078--Beverage Coolers
5149--Soft Drinks and Beverage Concentrates

Bicycle Shops--Repair
7699--Bicycle Repair Shops

Bicycle Shops--Retail
5941--Bicycle Shop--Except Motorized
5571--Bicycle Shop--Motorized

Billiard Parlors
7999--Billiard Parlors

Biscuit Companies
2051--Bakeries--Bread, Cake, and Related Products
2052--Bakeries--Cookies and Crackers
2053--Bakeries--Frozen Bakery Products, Except Bread
5461--Bakeries--Retail

Blacksmiths
7699--Blacksmith Shop

Blasting Contractors
1629--Blasting Contractors--except Building Demolition

Blind Institutions (Eductional Institutions)

Blind Institutions (Government Institutions)
8211--Elementary and Secondary Schools
8221--Colleges and Universities
8222--Junior Colleges
8249--Vocational Schools

Blueprinters
7334--Blueprint Service

Boarding Houses
7021--Boarding Houses

Boat and Yacht Owners
4499--Boat Hiring, Livery, or Rental--Except Pleasure
7999--Boat Rental--Pleasure or Fishing Party

Boat Dealers
5088--Boats--Wholesale--Except Pleasure
5091--Boats--Wholesale Pleasure: Canoes, Motorboats and Sailboats
5551--Boat Dealers--Retail
7389--Yacht Brokers

Boat Service Agencies
4493--Boat Yards, Storage and Incidental Repair and Yacht Basins
4499--Boat Cleaning or Boat Hiring, Livery, or Rental-- Except Pleasure
7999--Boat Rental--Pleasure or Fishing Party

Boiler Repairs
1711--Boiler Erection and Installation
1799--Insulation of Boiler and Pipe Contractors
7699--Boiler Repair Shop

Bonding Companies
6351--Bonding

Bookbinders
2789--Bookbinding and Related Work

Booksellers
5942--Book Stores

Bottling Plants
2086--Bottled and Canned Soft Drinks

Bowling Alleys
7933--Bowling Centers

Box Including Paper Board Manufacturing
2652--Setup Paperboard Boxes
2653--Corrugated and Solid Fiber Boxes
2655--Fiber Cans, Drums and Similar Products
2656--Sanitary Food Containers
2657--Folding Paperboard Boxes

Brew Pubs
5812--Eating Places
5813--Drinking Places

Breweries
2082--Breweries

Brick Manufacturing
3251--Brick and Structural Clay Tile
3271--Concrete Block and Brick

Bridge Contractors
1622--Bridge Construction

Broadcasting-Radio and TV
4832--Radio Broadcasting Stations
4833--Television Broadcasting Stations

Brokerages
6163--Brokers--Farm or Business Loan
6211--Brokers--Security
6221--Brokers--Commodity Contract

Brokers (Misc.)
4731--Brokers--Custom House, Shipping, Transportation
6163--Brokers--Farm and Business Loan
6211--Brokers--Security
6221--Brokers--Commodity Contract
6411--Brokers--Insurance
6531--Brokers--Manufactured Homes, Real Estate
7389--Brokers--Business Buying and Selling

Broom and Brush Manufacturing
3991--Brooms and Brushes

Building and Loan Associations
6035--Banks--Savings--Federal
6036--Banks--Savings--Not Federally Chartered

Building Cleaners
7349--Building Cleaning (Interior) and Maintenance Service

Building Contractors
1521--Building Construction--Single Family
1522--Building Construction--Residential, except Single Family
1541--Building Construction--Industrial and Warehouse
1542--Building Construction--Nonresidential, except Industrial and Warehouse

Building or House Movers
1799--Building or House Moving Contractors

Bus Lines--Interstate and Charter
4141--Local Bus Charter Service
4142--Bus Charter Service, except Local
4173--Bus Terminal and Service Facilities

Bus Manufacturing
3711--Motor Vehicles and Car Bodies

Business Colleges
8244--Business and Secretarial Schools

Butchers--Retail
5421--Meat Markets

Butchers--Wholesale
2011--Meat Packing Plants
2013--Meat Products Mfg.

Buttons Manufacturing
3069--Fabricated Rubber Products--NEC
3089--Plastics Products--NEC