The Writer's Handbook
An Editing Checklist
Use this checklist as a list of reminders while you are editing your paper.
12. Misspellings
Spelling errors are usually perceived as a reflection of the writer's careless attitude toward the whole project.
Don't allow your hard work to be marred in this way!
In addition to comprehensive dictionaries, you may want to use electronic spell checks, spelling dictionaries, and lists of frequently misspelled words found in handbooks.