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Library Collection Help
Library of Congress Classification System
The Carnegie Library of Pittsburgh uses the Library of Congress Classification System. The Library of Congress offers an overview of the classes. See our Library Subject Guide for more help with Subject Headings.
Browse the Catalog
| Subject Area | LC Class |
| Accounting | HF 5601-5689 |
| Advertising | HF 5801-6182 |
| Bankruptcy | HG 3760-3769 |
| Banks & Banking | HG 1501-3542.5 |
| Bookkeeping |
HF 5635 HD 30 |
| Business |
HF 5001-6201 HD 5343-5823 HD 60-70 |
| Business Communication | HF 5718-5734 |
| Business Ethics | HF 5387 |
| Business Etiquette | HF 5387 |
| Business Plans |
HG 4027 HD 30.28 |
| Business Proposals | HF 5718.5 |
| Commerce | HF 1007 |
| Consultants | HD 69.C |
| Consumer Protection | HC 79 |
| Copyright |
Z 551-656 KF 2992-3093 |
| Corporations |
HG 4009 HG 4028 HG 4057 |
| Credit | HF 5566 |
| Direct Marketing | HF 5415.126 |
| Economic Development |
HC 106
HD 82 |
| Employees | HF 5549 |
| Exporting |
HF 1007 HF 1411 |
| Family Business | HD 62.25 |
| Financial Services Industry | HG 4621 |
| Franchises |
HF 5429, HD30 |
| House Buying |
TH 4817-5
HD 1379 |
| Importing |
HF 1007 HF 1411 |
| Insurance | HG 8051 |
| International Business Enterprises | HF 1359 - 3834 |
| International Trade |
HF 1007, HF 1379, HF 1411 |
| Inventions |
T 15-35
T 201-T 339 |
| Investments | HG4501-5900 |
| Labor |
HD 4901 HD 8072 |
| Labor Unions |
HD 4901 HD 6338 - 6976 HD 8072 |
| Management |
HD 31-60 HF 5547 |
| Manufacturing Industries | HD 9720 - 9975 |
| Marketing | HF 5415-5416 |
| Mass Media |
P 88-96 HM 258 HN 90.M |
| New Business Enterprises |
HD 62-69 HF 5351-5627 HD 2341-9970 HG 4027 |
| Personal Finance | HG 179 |
| Personnel Management |
HF 5547-5549.5 HD 31-58 |
| Public Administration | JF 1531 |
| Public Finance | HJ 141 |
| Public Relations | HM 263 |
| Real Estate Investment | HD 1375-1383 |
| Retail Trade | HF 5429-5429.6 |
| Selling | HF 5438-5439 |
| Small Business |
HD30-69
HF2341-8036 HG4027 |
| Stock Exchanges | HG 4551-4595 |
| Taxation |
HJ 2250 - 5900 KF 6289 - 6369 |
| Television Broadcasting | HE 8690-8699 |
| Total Quality Management | HD 62.15 |
| Trade Associations | HD 2421 - 2429 |
| Trademarks |
H 1555
T 223 |
| Transportation | HE 199 - 5903 |
| Wholesale Trade | HF 5419 - 5422 |
| Work | HD 4801 - 8943 |
