Bhai Veer Singh wrote the book "Devi Pujan Partal" in response to the claims made by the anti-Sikh lobby like the rss, vhp, arya samaj, etc, that Guru Gobind Singh used to worship devi chandi and that the Khalsa was formed to protect the hindus. Bhai Veer Singh has repudiated all these nonsensical claims in this well-researched book. The fourth reprint of the book was published in 1963.
1) Durga Prabodh - Giani Ditt Singh
2) Dashmesh Darpan tey Sri Dasam Granth di Kunji - Sher Singh MSc Kashmir https://sikhdigitallibrary.blogspot.com/2013/03/dashmesh-darpan-tey-sri-dasam-granth-di.html
3) Kee Guru Gobind Singh devi di Pooja Karde Sun - Surjeet Singh Tract No. 329 https://sikhdigitallibrary.blogspot.com/2016/03/kee-guru-gobind-singh-devi-di-pooja.html