Of such assurances, however, he had already a voluminous collection, and it would not have been worth his while to forsake a fruitful avocation merely to hear Mrs. Penniman say, for the thousandth time, that she had made his cause her own.
There are no more uses of "voluminous" in the book.
Show samples from other sources
I had trouble sitting down at the table because Bertha had made me wear a fashionable gown, and my petticoat was voluminous.
Gail Carson Levine -- Ella Enchanted
She looked at me on the pole and in a voluminous voice—powerful, masculine, and incredibly loud—she bellowed, "What’ch you doin’ up on that pole, man?"