Mr Smith's Peach Seeds - 2012 was released on:
USA: February 2012
The Peach Brand - 1914 was released on: USA: 17 June 1914
George Burns Comedy Week - 1985 The Smiths was released on: USA: 7 October 1985
A Japanese Peach Boy - 1910 was released on: USA: 1 February 1910
1983 Peach Bowl - 1983 TV was released on: USA: 30 December 1983
1978 Peach Bowl - 1978 TV was released on: USA: 25 December 1978
One of the Smiths - 1931 was released on: USA: 23 May 1931
Too Many Smiths - 1915 was released on: USA: 13 September 1915
She Was a Peach - 1914 was released on: USA: 4 April 1914
This is the asker. I found a table that listed the exact release dates of every episode, minus the omakes and Wedding Peach DX. I added them to Wedding Peach's Wikipedia article.
The Living Peach - 1911 was released on: USA: 15 November 1911
Pearls and a Peach - 1918 was released on: USA: 23 December 1918
The Pasadena Peach - 1912 was released on: USA: 26 April 1912
A Peach and a Pair - 1915 was released on: USA: 22 June 1915
The Peach Pickers - 1916 was released on: USA: 4 July 1916
A Peach of a Pair - 1934 was released on: USA: 29 December 1934
Beach Peach - 1950 was released on: USA: 12 May 1950
The Peach Brand - 1914 was released on: USA: 17 June 1914