An open letter in HaLevanon 18 February, 1869, HaCarmel, page 278, bottom of right column:
From Yisakhar Berush Halevi
איש הורוביץ
Ish Horovitz.
To the scholar rabbi,
א"ל
Feinstein from Brisk d'Lita, Shalom uvrakha!:
When we were together in Warsaw on business, you told me that you are the person behind the name
אל"ף
who enlightened us with your wise remarks in HaLevanon, and being very modest you hid your own name.
Ish Horovitz comments on an article Feinstein wrote in HaLevanon of that year. He says that he does not hide his name like Feinstein, because scholars of Torah and wisdom should not be like thieves sneaking in the dark…
