This is a set of 5 books. Immediate purchase is welcome. Please understand that these are used books that have been stored by an individual for a long time, so there may be damage due to aging. I have checked the condition as carefully as possible, but it is a subjective assessment. Please forgive any oversights or omissions of minor scratches, stains, etc. There are no smokers or pets. Please understand that these are used items stored by an individual before purchasing.