i don't think a chart as such existed at that time
It was a Sunday.
Songs and Bullets - 1938 was released on: USA: 1 April 1938 (premiere) USA: 15 May 1938
Law of the Plains - 1938 was released on: USA: 12 May 1938 Portugal: 1 September 1941
I Met My Love Again - 1938 was released on: USA: 14 January 1938 Finland: 8 May 1938 Portugal: 1 June 1938 Hungary: 23 May 1940 Spain: 21 August 1944 (Madrid)
Island in the Sky - 1938 was released on: USA: 1 April 1938 USA: 13 May 1938 (New York City, New York)
There were no charts then
"The Woodpecker Song" by Glenn Miller was the number 1 hit song on May 20, 1940.
As of June 1, 2011, someone born on May 31, 1990 would be 21 years old.
Judge Hardy's Children - 1938 was released on: USA: 26 March 1938 Australia: 16 June 1938 Denmark: 22 December 1938 Sweden: 24 February 1939 Portugal: 1 May 1939 Finland: 21 May 1939
The Firefly - 1937 was released on: USA: 1 September 1937 (New York City, New York) USA: 5 November 1937 Germany: 1938 France: 16 February 1938 Australia: 24 February 1938 Finland: 6 March 1938 Denmark: 22 March 1938 Belgium: 25 March 1938 (Antwerpen) Portugal: 17 May 1938 Belgium: 20 May 1938 (Brussels) Netherlands: 1 September 1938 (Amsterdam) Spain: 26 January 1940 (Barcelona)
The number one song for the week of July 1-7, 1962 on the U.S. Charts was 'The Stripper' by David Rose.
Little Tough Guy - 1938 was released on: USA: 22 July 1938 Sweden: 11 November 1938 Denmark: 5 May 1939 Portugal: 24 May 1939 USA: 1 March 1948 (re-release)