I have I Lawsuit in the U.S. District Court for the Southern District of Ohio. I am at the stage where I am working on submitting
a 26(a)(1) form: Initial Disclosures. The question is; How do I find
the Bonding Co. that Bond"s Police Officers (in this case, Albany,
Ohio Township). This way I can file a claim on their Bond or the
Court can do this after Judgement & Execution (if this goes that
far). Also, if I discover a witness that could help my case, say 3
months from now is there a way to get that witness even though it
was not done originally in the Initial Disclosures Form?

You will have to get an order from the court. If you have filed your case as a court of record, you can give the order yourself.

The Public Official Bond Certificates for my local Police Chief are filed with my City Clerk. County Sheriff Bonds are filed with my County clerk. The Police officers are likely all under a "Master Bond", which may be filed in their Human Resource file or with the City Clerk.

If you search your Township's online Charter, it will have a section about Public Official Bonds and will tell you where yours are recorded and filed and who is required to be bonded.

Get their Oaths of Office too - usually filed with the City Clerk. Violations of their signed Oaths are cause for making a Claim on their Bonds, which in turn (if they lose their Bond) not only do they have to pay back the claim, they lose their job as they must be bonded.

But start with your Township Charter, your County Charter and your State Codes and Statutes. Use your browser function to do a search for Official Bonds, or Public Bonds.

These are Public Records and you need to make a formal request, pay the copy fees for certified copies. Check your State Public Records Request laws. Normally they have to respond within 10-14 days.