Is it a known fact that Floyd actually robbed any banks with the Dillinger gang? I have heard that he did but have never seen any evidence to prove it.

Just my two-cents-worth, but...Doubtful.Probably an urban legand at best.No solid evidence...R.D.

It is suggested in Nickel & Helmer's "Baby Face Nelson" that Floyd could have participated in the
Dillinger gang's last robbery.

He merely "suggested" Floyd "could" have been involved with Dillinger because there is no solid proof.The theory is based mostly on a statement made by a not-so-credible fringe Dilliger gang associate who under interrogation claimed Floyd was involved with the gang in a single robbery...Makes for a nice story tho.