http://press-pubs.uchicago.edu/founders/documents/a2_1_2-3s6.htmlGeneral summary:
1789:
All states chose electors through the legislature (and they all voted for GW anyway, so it doesn't really matter)
1792:
Maryland, Pennsylvania, and NH had a direct popular vote for their electors.
Virginia divided the state into 21 districts, each of which elected one elector. (Somehow, they all voted the same way).
Massachusetts divided its state into four districts, two of which elected 5 electors each, and two of which elected 3 electors each.
North Carolina, under time pressure, divided the state into 4 districts and had state legislators from each of the 4 districts meet on the 25th of November to select the three electors for their district.
The other 9 states had legislatures choose the electors directly.
1796:
PA, NH: Direct popular vote of electors (general ticket)
VA, NC, MD: Election by district
MA: Election by Congrssional District, Legislature selects the two at-large electors (and any electors in a district where no elector received a majority)
TN: The Tennessee Legislature divided the state into three districts (one for each elector), and appointed electors in each electoral district to choose an elector. (Yes, electors choosing electors. Confusing, ain't it?)
The Rest: Selection by the legislature
1800:
VA, RI, and "four other states": popular vote
TN: continued its "electors for electors" system
MA, PA, and the rest: Selected by the Legislature.
Specific state histories:
KY: by-district method from (?) through 1820, general ticket thereafter
TN, MD: by-district method from (?) through 1828, general ticket thereafter
IN: appointed, 1816, 1820. By district, 1824, 1828. General ticket thereafter.
IL: By district, 1820, 1824. General ticket thereafter.
ME: by district: 1820, 1824, 1828. General ticket thereafter.
MA: 1789: Appointed. 1792: Weird district (see above). 1796: by CD's w/ 2 at large (see above). 1800: Appointed. 1804: General-ticket. 1808: Appointed. 1812: By Districts. 1816: Appointed. 1820: By district. General ticket thereafter.
NY: Appointed, 1789-1824. 1828: Each district chooses its electors, which select the electors for the entire state. General Ticket thereafter.
1812: NC, VT, NJ directly appointed