 Meet Moose. He's a therapy dog at a university counseling center and he's looking for information on therapy dogs like him. He finds a book called Animal Assisted Therapy and Counseling and wants to check it out. From his library's catalog he can see that it's on the third floor. The call number is listed which tells him everything he needs to find the book. Let's go with him to get it. First he heads up to the third floor. Call numbers are displayed horizontally in the catalog but vertically on the book spine and it can be easier to see the parts of the call number when the displayed vertically rather than horizontally. Let's start with the first part the letters RC. Once Moose is on the third floor he uses the tags on the end of each shelf to find the Rs and then the RCs. Now he can move on to the second part of the call number 489. This number will also be displayed on the tags at the end of the shelves. It looks like he's found the right one. These numbers are read as numbers so RC489 would come after RC450 and before RC500. Now we can move on to the next part of the call number P47. This part of the call number is arranged alphabetically and then numerically so for instance the L's come before the P's. For the numbers read them like decimals. P47 comes before P7. This call number has a second letter and number combination although not all call numbers will. Read this one in the same way as the one before. The last piece of the call number is the year. It looks like Moose has found the one he was looking for. To check it out he heads down to his library circulation desk. Happy reading Moose! Remember that if you have any questions about finding a book you can always ask a librarian for help.