While I have the ultimate respect for Ben's legacy and contributions, I never once associated him with libraries.
Whatever Ben's musing on libraries were, it was Andrew Carnegie 100 years later who spent over $45 million (19th century dollars) founding more than 1700 free libraries in the United States alone. He was the 'father' of the free library system as we know it.
And I have little doubt that both Carnegie and Franklin would approve of naming this library after Douglass who was just as an accomplished and public spirited man as they were. Douglass is very well deserving, IMHO.
The last couple of days I have posted things my mind has jumbled up ... you're correct on the Carnegie thing and I somehow had that effort attributed to Franklin.
Time to get righteously stoned, I guess, and wait for the end.