In my opinion that looks like a pre-21, Iver Johnson, Model 90 Truss Frame Road Racer. It may appear to be a "kids or boy's bike as it is the small (20") frame. The wheelset may have been changed out and the fork throws things off a bit as it should be Nickel plated, but other than that it looks pretty darn good. Given the chance, It would take me between 5 and 6 seconds to buy it if the price was reasonable..............................................and maybe 15 to 20 seconds if were priced a little high.
Pete in Fitchburg