* The name is misspelled: Perhaps you're thinking of an author with a slightly different name. Could you double-check the spelling?
* The author is not well-known: It's possible that Irvin Graham is a lesser-known author, or someone who hasn't published widely.
* The author is a pseudonym: Some authors use pen names.
To help me find the information you're looking for, could you please provide more context?
* Do you know anything about the author's genre or type of writing?
* Do you remember any specific titles or books?
* Do you know any other details about the author, such as their nationality or time period?
With more information, I can try to identify the author you're looking for and find out what they've written.