Final answer:
Henry Wadsworth Longfellow's first collection of poems was published in 1839 and it is titled 'Voices of the Night'.
Step-by-step explanation:
Henry Wadsworth Longfellow's first collection of poems was published in 1839. The collection is titled 'Voices of the Night' and it includes some of his most well-known poems like 'The Psalm of Life' and 'The Light of Stars'. 'Voices of the Night' established Longfellow as a popular American poet during the Romantic period.