| Year | Amount |
| 1964 | $298 |
| 1965 | $453 |
| 1966 | $731 |
| 1967 | $1,370 |
| 1968 | $1,484 |
| 1970 | $707 |
| 1971 | $1,257 |
| 1972 | $970 |
| 1973 | $1,143 |
| 1975 | $726 |
| 1976 | $59 |
| Year | Amount |
| 1964 | $6,610 |
| 1965 | $8,093 |
| 1966 | $9,959 |
| 1967 | $13,499 |
| 1968 | $12,190 |
| 1969 | $6,790 |
| 1970 | $6,769 |
| 1971 | $9,449 |
| 1972 | $7,610 |
| 1973 | $8,443 |
| 1975 | $21,812 |
| 1976 | $3,283 |
| 1978 | $3,436 |
| 1979 | $4,273 |
| 1981 | $5,430 |
| 1985 | $82,849 |
| 1987 | $57,789 |
| 1988 | $27,879 |
| 1990 | $32,379 |
| 1991 | $18,119 |
Determining the Value of Donated Property - Pub.561
Taxation of Tax-Exempt Organizations' Income from Corporate Sponsorship (REG-209601-92)
Charitable Deduction For Nonitemizers -- Senate Bill 2077
T.D. 8874 -- Final Regulations on Travel Tours by Nonprofits