Here are some experiences and realizations of devotees who give people Krsna consciousness through books by Srila Prabhupada and his followers.
Two Forms of the Lord
One day in Prague in 1996 I was supposed to be distributing books, but I couldn't get up the nerve to approach anyone. After a while I became upset with myself.
"How can you just sit here while these people walking by are searching for the very books you're holding in your hands? Do something!"
At last I pulled myself together and showed a book to a young man hurrying back to work. He was interested in the books, so he invited me to his shop, an alternative gift shop, full of oriental and Indian gifts. His two colleagues also liked the books, but no one was willing to buy them.
I showed them a painting from Srimad-Bhagavatam of Lord Visnu on the back of Garuda, and I began to narrate a story about Lord Visnu.
Suddenly one of the shop assistants exclaimed, "Hey, He looks like ours!"
They took me upstairs to a statue covered with cloth. One of them uncovered the statue, and there He was Lord Visnu standing on the back of Garuda, ready to release His Sudarsana disc.
I cried out, "Visnu!" and bowed down.