Instruct: Classify the given review as either positive or negative.
Query: Not the needed source

They say Americans are singularly ignorant of geography. My knowledge of geography is fairly good, but I learned about the same time I bought these two excellent sourcebooks that my husband's family was from Lorraine, not Alsace. For those with family from Alsace, though, these two volumes are worth their weight in gold -- easy to read, easy to find needed data, data substantiated well -- everything a sourcebook should be. Now, if only my kin had come from Alsace, I'd have the answers I wanted.