Roman Ritual book

In Paul Turner's Blog by Paul Turner

Q:  I have a question on the old Roman Ritual book which was published in 1946. Is this book still allowed to use when we bless something, for example ? I mean is it still validly used in the liturgy ?

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A:  The extraordinary form allows usage of that book, but the Book of Blessings published by the USCCB should have everything you need.