Classification Web: LC Subject Headings, Juvenile Subject Headings, and Subject Heading

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Classification WebLC Subject Headings,
Juvenile Subject Headings, and Subject Heading
Classification Number Correlations

• Robert Freeborn

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Searching Subject Correlations vs. LCSH

• LC Class/Subject Correlations
• -- Finds the SHs most frequently used in the LC
  catalog with a specific class number, and vice
  versa.
• -- Useful if one is has a specific SH or class
  number to begin with.
• LC Subject Search
• -- Similar to searching the LCSH listing in
  Class Plus.
• -- Useful if one doesn't have a specific SH to
  begin with.

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Classification WebSubject Heading
Classification Number Correlations
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SH Classification Number Correlations

• Click on the "Subject Heading Classification
  Number Correlations" link to begin. Next screen

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SH Classification Number Correlations

• Clicking on the "Help" button, or either of the
  "LC classification number" or "Subject heading"
  hotlinks, brings up the Subject Correlations
  Help screen from the beginning. Next screen

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SH Classification Number Correlations

• To perform a LC classification search, enter a
  number (e.g., "m1621") in the search box and
  click on the "Find" button. Next screen
• Do not press the "Enter" key after entering a
  search term, or one will reset the search boxes.

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SH Classification Number Correlations

• The following is the result of a "Find" search in
  the "LC classification number" search box. Next
  screen

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SH Classification Number Correlations

• Clicking on the "B" hotlink next to "M1621"
  displays a list of links to library catalogs
  containing bibliographic records with this
  number. Next screen

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SH Classification Number Correlations

• Clicking on the "L" hotlink next to "M1621"
  displays appropriate LC subject headings for this
  number. Next screen
• NOTE The result is "M1621.2" because the
  previous number in the list is the combined
  "M1619-1621".

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SH Classification Number Correlations

• Clicking on the "C" hotlink next to "M1621"
  displays the LC classification browser set to the
  point where the class number appears. Next
  screen

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SH Classification Number Correlations

• Clicking on the "M1621" hotlink displays only the
  class numbers and not the corresponding LC
  subject headings. Next screen

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SH Classification Number Correlations

• Performing a Subject heading search is identical
  to a LC classification number search. Next
  screen

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SH Classification Number Correlations

• The following is the result of a "Find" search in
  the "Subject heading" search box. Next screen
• NOTE The class number results are arranged under
  each subject heading according to which one was
  used the most within the LC catalog database.

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Classification WebLC Subject Headings
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LC Subject Headings

• Click on the "LC Subject Headings" link to begin.
  Next screen

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LC Subject Headings

• Clicking on the "Help" button brings up the
  Subject Headings Search Help screen from the
  beginning. Next screen

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LC Subject Headings

• Clicking on one of the hotlinks next to a search
  box (e.g., "Structured subject heading") brings
  up the pertinent section of the Subject Headings
  Search Help screen. Next screen

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STRUCTURED vs. UNSTRUCTURED HEADINGS

• Structured Headings Results displayed in LCSH
  order, complete with subdivisions.
• Railroads--ZaireRailroads--Zambia R S
  Railroads--Zimbabwe R S Railroads, Aerial
  Railroads and earthquakes Railroads and state
  (May Subd Geog) R S
• Unstructured Headings Results displayed in
  alphabetical order.
• Railroads, Aerial Railroads--Africa, East
  Railroads--Africa, Northeast Railroads--Air-brak
  es Railroads--Airspace utilization Railroads
  and earthquakes Railroads and state

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LC Subject Headings

• To perform a structured subject heading search,
  enter a term (e.g., "concertos") in the search
  box and do one of the following Next screen
• Browse gt Click on the "Browse" button.
• Search gt Click on the "Search" button, or press
  the "Enter" key.

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LC Subject Headings

• The following is the result of a "Browse" search
  in the "Structured subject heading" search box.
  Next screen
• The results are displayed in LCSH order (e.g.,
  "Concertos--Cadenzas" follows "Concertos").
• NOTE This is an exact search (e.g., the search
  term existed in the database). If it hadn't been
  an exact search, then one would have had to look
  up and down the database by using the arrow
  buttons at the top of the screen.

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LC Subject Headings

• Clicking on the "R" hotlink next to "Concertos"
  brings up the appropriate authority record. Next
  screen

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LC Subject Headings

• The following is the result of a "Search" search
  in the "Structured subject heading" search box.
  Next screen
• NOTE Search results are identical whether it's
  structured or unstructured.

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LC Subject Headings

• Performing an unstructured subject heading search
  is identical to a structured subject heading
  search. Next screen

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LC Subject Headings

• The following is the result of a "Browse" search
  in the "Unstructured subject heading" search box.
  Next screen
• The results are displayed in alphabetical order
  (e.g., "Concertos (Accordion)" follows
  "Concertos").

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LC Subject Headings

• Performing a structured (or unstructured)
  free-floating subdivision search is identical to
  a structured subject heading search. Next screen

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LC Subject Headings

• The following is the result of a "Browse" search
  in the "Structured free-floating subdivision"
  search box. Next screen
• NOTE This is an exact search (e.g., the search
  term existed in the database). If it hadn't been
  an exact search, then one would have had to look
  up and down the database by using the arrow
  buttons at the top of the screen.

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LC Subject Headings

• The following is the result of a "Search" search
  in the "Structured free-floating subdivision"
  search box. Next screen

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LC Subject Headings

• Performing a keyword search is identical to a
  structured subject heading search. Next screen
• Can be combined with other SH or subdivision
  searches to limit results. Must use "Search"
  button or press "Enter" key.

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LC Subject Headings

• The following is the result of a "Browse" search
  in the "Keyword" search box. Next screen
• Keyword search results are displayed in random
  order.

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LC Subject Headings

• Clicking on "violin" displays only the keywords
  and not the corresponding LC subject headings and
  their class numbers. Next screen

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LC Subject Headings

• The following is the result of a "Search" search
  in the "Keyword" search box. Next screen

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Classification WebJuvenile Subject Headings
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Juvenile Subject Headings

• Click on the "Juvenile Subject Headings" link to
  begin. Next screen

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Juvenile Subject Headings

• Performing a Juvenile subject heading search is
  identical to a structured subject heading search.
  Next screen

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Juvenile Subject Headings

• The following is the result of a "Browse" search
  in the "Structured subject heading" search box.
  Next screen
• NOTE This is a null search (e.g., the search
  term doesn't exist in the database). The result
  puts one at the point in the database just after
  the place where "toys" would exist.

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Juvenile Subject Headings

• The following should have been the result of a
  "Search" search in the "Structured subject
  heading" search box. Next screen

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Juvenile Subject Headings

• Instead, this is the result of a "Search" search.
  Next screen

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Juvenile Subject Headings

• If one clicks on the "Search" button at the
  Search results screen, then one is transferred to
  the LC Subject Headings database. Next screen

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