Jobs at small Milwaukee companies nobody posts about - first time posting

I asked around at a community meeting and got three leads. Any experience at all would help. One is a print shop, one is an accounting firm and one is a clinic. Should I visit in person?

Small employers often hire on recommendation. Ask neighbours, former co-workers and your library.

A short email with two sentences about what you can do and your résumé attached worked for me. I followed up after a week.