Rajkumar is a senior poet; his first book of poems was published in Calcutta in 1975. In 1980, he edited an anthology of poems on Tagore with contributions from eminent poets of Bengal and Bangladesh. In 2009, two of his books were published in Calcutta. One was a translation of Maurice Carmes book Songs of Beginning (from French to Bengali). He also published an e-book titled Soliloquy from www.poemhunter.com. This is a book of poems by Rajkumar mainly on nature, love, spirituality, and philosophy, chosen and published during last five years. He is a regular contributor to www.poemhunter.com, www.mypoetryforum.com, and www.allpoetry.com. His poems are regularly published in PRISM International, magazines, IPF anthologies, and Ink Angels, printed anthologies of the AllPoetry.com.