Geodesic
A Collectionwise Hausdorff, Non-Normal Moore Space
Canadian journal of mathematics, Tome 28 (1976) no. 3, pp. 632-634

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A topological space X is said to be collectionwise Hausdorff if every discrete collection of points of X can be simultaneously separated by a collection of pairwise disjoint open sets. The question of whether there exists a collectionwise Hausdorff, non-normal Moore space was first asked by R. L. Moore. In 1964, J. M. Worrell announced that such a space did indeed exist (see [7]), but his proof has never appeared in print. 
Wage, Michael L. A Collectionwise Hausdorff, Non-Normal Moore Space. Canadian journal of mathematics, Tome 28 (1976) no. 3, pp. 632-634. doi: 10.4153/CJM-1976-062-5
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