These are the 1962-63 Dr. Martin Luther High School Rams who were Minnesota's only undefeated high school basketball team at the end of the season in 1963. There was no tournament for the team in that year.
In the following season, some of the players ran the winning streak to 33 games before being upset by New Ulm Holy Trinity at Luther.
Additional details are in the following article which designates which objects have been archived for sports history. You can find those by using the search Archives at the left of the screen and entering in the specific criteria which would be the object numbers 1956, 1957, 1958, 1959, 1960 and others which may be added shortly.
Photo courtesy Prof. Jack Gronholz and Martin Luther College. Original photo by Ron Grieser, New Ulm Journal.