Call Numbers for "Dummies"

Now, before anyone takes offence with the title, please check out the "For Dummies" story.
For this exercise, think of the library as it's own little world . . . The first line you encounter is the "Country" that you're looking for (or the location within the library). We have may countries here: Stacks, Reference, Periodicals, Education Room, Circ Desk, Reserves, even Storage (aka Siberia). So make sure that you're in the right country before looking further.
The next line could be considered the "Province", and it's made of one or two letters that indicate the general subject. Books are organized by subject matter. The Library of Congress (LC) list of letters that have been assigned to the various subjects (classifications) can be found here. They are, of course all arranged in alphabetical order.
Next we find the "City", don't worry they're all numerical and arranged in order. Sometimes you'll see decimal points . . . don't be intimidated, just read them the way you were taught in junior high. (Remember? 6457, 6457.2, 6457.261, 6457.3).
The "Street" is the next level down and it requires a bit more attention to detail. . . Notice that there is a decimal point in front of the whole line and this is a clue. You read this line first alphabetically and then as a decimal, here it's 0.65. Follow your basic rules for decimals, for instance 0.7 goes after 0.65 and 0.4 goes after 0.3998.
Chances are you'll have your book in hand by now, but you may need the "House Number" to determine the specific edition. The fifth (and final) line in our example gives the year of publication.
Now some variation can be found in call numbers . . . the old cliche, "an exception to every rule" really applies. But for the most part, you can't go wrong imagining the call number as an address.






