saluete amici. And a hearty welcome to CVDM
As well as by Wheelock, the Descriptive Ablative is also treated (with examples) by Gildersleeve and Lodge,
Latin Grammar, § 400, and by Allen and Greenough,
A New Latin Grammar for Schools and Colleges (available free online with Perseus) § 415.
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Edited afterthought (
@CVDM): if you are a student or a beginner, the Perseus website, emanating from the Classics Faculty at Tufts University (
Perseus Collections/Texts), is a very useful resource to know about.