Olivers wrote:
>
> My _Mexican Cookbook_, Erna Ferguson, U of NMexico Press, 1945 edition of
> 1934 original, does not contain Chili con Queso or anything closely
> related.
>
> On the other hand, it does feature a dish called "Burritos", fresh corn
> tortillas rolled thick, stuffed with chicharonnes (described as are today's
> versions) and then baked...a far cry from the burritos of today. Evidence
> of its New Mexico origin, the book is filled with recipes calling for
> squash, green corn and green chiles.
>
> TMO

Erna Fergusson certainly was a well-known figure in Albuquerque.
However, she was Anglo and it wouldn't surprise me if her style of
cooking differed somewhat from Hispanic 'Mexican' cooking of the time.
(One of the ABQ public library branches is named after her.)