The Biography of Rabbi Tzvi Meir Steinmetz is now available on Amazon, titled The Rebbe's Poet.

The books were published by Heichal Menachem and are available at
Heichal Menachem in Yerushalayim (Rechov Yishayahu 22, +972-02-5384928) and Bnei
Brak (Sefat Emet 1, +972-03-5795729).

The distribuitor is Eshel +972-03-9607637, their email is info@eshel.co.il.

Online you could find them at Findabook.co.il.